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<h2><span class="refentrytitle"><a name="eds-Calendar-time-utilities.top_of_page"></a>Calendar time utilities</span></h2>
<p>Calendar time utilities</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="eds-Calendar-time-utilities.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-days-in-month" title="time_days_in_month ()">time_days_in_month</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-day-of-year" title="time_day_of_year ()">time_day_of_year</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-day-of-week" title="time_day_of_week ()">time_day_of_week</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-is-leap-year" title="time_is_leap_year ()">time_is_leap_year</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-leap-years-up-to" title="time_leap_years_up_to ()">time_leap_years_up_to</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#isodate-from-time-t" title="isodate_from_time_t ()">isodate_from_time_t</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-from-isodate" title="time_from_isodate ()">time_from_isodate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-add-day" title="time_add_day ()">time_add_day</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-add-week" title="time_add_week ()">time_add_week</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-day-begin" title="time_day_begin ()">time_day_begin</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-day-end" title="time_day_end ()">time_day_end</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-add-day-with-zone" title="time_add_day_with_zone ()">time_add_day_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-add-week-with-zone" title="time_add_week_with_zone ()">time_add_week_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-add-month-with-zone" title="time_add_month_with_zone ()">time_add_month_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-year-begin-with-zone" title="time_year_begin_with_zone ()">time_year_begin_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-month-begin-with-zone" title="time_month_begin_with_zone ()">time_month_begin_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-week-begin-with-zone" title="time_week_begin_with_zone ()">time_week_begin_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-day-begin-with-zone" title="time_day_begin_with_zone ()">time_day_begin_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">time_t</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-day-end-with-zone" title="time_day_end_with_zone ()">time_day_end_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#time-to-gdate-with-zone" title="time_to_gdate_with_zone ()">time_to_gdate_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">struct <a class="link" href="eds-Main-Utility-Toolbox.html#tm" title="struct tm"><span class="returnvalue">tm</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#icaltimetype-to-tm" title="icaltimetype_to_tm ()">icaltimetype_to_tm</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">struct <a class="link" href="eds-Main-Utility-Toolbox.html#tm" title="struct tm"><span class="returnvalue">tm</span></a>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#icaltimetype-to-tm-with-zone" title="icaltimetype_to_tm_with_zone ()">icaltimetype_to_tm_with_zone</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">struct <span class="returnvalue">icaltimetype</span>
</td>
<td class="function_name">
<a class="link" href="eds-Calendar-time-utilities.html#tm-to-icaltimetype" title="tm_to_icaltimetype ()">tm_to_icaltimetype</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="eds-Calendar-time-utilities.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="eds-Calendar-time-utilities.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="time-days-in-month"></a><h3>time_days_in_month ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
time_days_in_month (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> year</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> month</code></em>);</pre>
<p>Returns the number of days in the month. Year is the normal year, e.g. 2001.
Month is 0 (Jan) to 11 (Dec).</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>year</p></td>
<td class="parameter_description"><p>The year.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>month</p></td>
<td class="parameter_description"><p>The month.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.2.6"></a><h4>Returns</h4>
<p> number of days in the given month/year.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-day-of-year"></a><h3>time_day_of_year ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
time_day_of_year (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> day</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> month</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> year</code></em>);</pre>
<p>Returns the 1-based day number within the year of the specified date.
Year is the normal year, e.g. 2001. Month is 0 to 11.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>day</p></td>
<td class="parameter_description"><p>The day.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>month</p></td>
<td class="parameter_description"><p>The month.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>year</p></td>
<td class="parameter_description"><p>The year.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.3.6"></a><h4>Returns</h4>
<p> the day of the year.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-day-of-week"></a><h3>time_day_of_week ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
time_day_of_week (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> day</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> month</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> year</code></em>);</pre>
<p>Returns the day of the week for the specified date, 0 (Sun) to 6 (Sat).
For the days that were removed on the Gregorian reformation, it returns
Thursday. Year is the normal year, e.g. 2001. Month is 0 to 11.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>day</p></td>
<td class="parameter_description"><p>The day.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>month</p></td>
<td class="parameter_description"><p>The month.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>year</p></td>
<td class="parameter_description"><p>The year.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.4.6"></a><h4>Returns</h4>
<p> the day of the week for the given date.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-is-leap-year"></a><h3>time_is_leap_year ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
time_is_leap_year (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> year</code></em>);</pre>
<p>Returns whether the specified year is a leap year. Year is the normal year,
e.g. 2001.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>year</p></td>
<td class="parameter_description"><p>The year.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.5.6"></a><h4>Returns</h4>
<p> TRUE if the year is leap, FALSE if not.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-leap-years-up-to"></a><h3>time_leap_years_up_to ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
time_leap_years_up_to (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> year</code></em>);</pre>
<p>Returns the number of leap years since year 1 up to (but not including) the
specified year. Year is the normal year, e.g. 2001.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.6.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>year</p></td>
<td class="parameter_description"><p>The year.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.6.6"></a><h4>Returns</h4>
<p> number of leap years.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="isodate-from-time-t"></a><h3>isodate_from_time_t ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
isodate_from_time_t (<em class="parameter"><code><span class="type">time_t</span> t</code></em>);</pre>
<p>Creates an ISO 8601 UTC representation from a time value.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>t</p></td>
<td class="parameter_description"><p>A time value.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.7.6"></a><h4>Returns</h4>
<p> String with the ISO 8601 representation of the UTC time.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-from-isodate"></a><h3>time_from_isodate ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_from_isodate (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *str</code></em>);</pre>
<p>Converts an ISO 8601 UTC time string into a time_t value.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.8.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>str</p></td>
<td class="parameter_description"><p>Date/time value in ISO 8601 format.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.8.6"></a><h4>Returns</h4>
<p> Time_t corresponding to the specified ISO string.
Note that we only allow UTC times at present.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-add-day"></a><h3>time_add_day ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_add_day (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> days</code></em>);</pre>
<p>Adds a day onto the time, using local time.
Note that if clocks go forward due to daylight savings time, there are
some non-existent local times, so the hour may be changed to make it a
valid time. This also means that it may not be wise to keep calling
<a class="link" href="eds-Calendar-time-utilities.html#time-add-day" title="time_add_day ()"><code class="function">time_add_day()</code></a> to step through a certain period - if the hour gets changed
to make it valid time, any further calls to <a class="link" href="eds-Calendar-time-utilities.html#time-add-day" title="time_add_day ()"><code class="function">time_add_day()</code></a> will also return
this hour, which may not be what you want.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>days</p></td>
<td class="parameter_description"><p>Number of days to add.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.9.6"></a><h4>Returns</h4>
<p> a time_t value containing <em class="parameter"><code>time</code></em>
plus the days added.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-add-week"></a><h3>time_add_week ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_add_week (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> weeks</code></em>);</pre>
<p>Adds the given number of weeks to a time value.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.10.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>weeks</p></td>
<td class="parameter_description"><p>Number of weeks to add.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.10.6"></a><h4>Returns</h4>
<p> a time_t value containing <em class="parameter"><code>time</code></em>
plus the weeks added.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-day-begin"></a><h3>time_day_begin ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_day_begin (<em class="parameter"><code><span class="type">time_t</span> t</code></em>);</pre>
<p>Returns the start of the day, according to the local time.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>t</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.11.6"></a><h4>Returns</h4>
<p> the time corresponding to the beginning of the day.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-day-end"></a><h3>time_day_end ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_day_end (<em class="parameter"><code><span class="type">time_t</span> t</code></em>);</pre>
<p>Returns the end of the day, according to the local time.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.12.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>t</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.12.6"></a><h4>Returns</h4>
<p> the time corresponding to the end of the day.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-add-day-with-zone"></a><h3>time_add_day_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_add_day_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> days</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Adds or subtracts a number of days to/from the given time_t value, using
the given timezone.
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.13.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>days</p></td>
<td class="parameter_description"><p>Number of days to add.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.13.6"></a><h4>Returns</h4>
<p> a time_t value containing <em class="parameter"><code>time</code></em>
plus the days added.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-add-week-with-zone"></a><h3>time_add_week_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_add_week_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> weeks</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Adds or subtracts a number of weeks to/from the given time_t value, using
the given timezone.
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.14.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>weeks</p></td>
<td class="parameter_description"><p>Number of weeks to add.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.14.6"></a><h4>Returns</h4>
<p> a time_t value containing <em class="parameter"><code>time</code></em>
plus the weeks added.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-add-month-with-zone"></a><h3>time_add_month_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_add_month_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> months</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Adds or subtracts a number of months to/from the given time_t value, using
the given timezone.</p>
<p>If the day would be off the end of the month (e.g. adding 1 month to
30th January, would lead to an invalid day, 30th February), it moves it
down to the last day in the month, e.g. 28th Feb (or 29th in a leap year.)</p>
<p>NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.15.7"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>months</p></td>
<td class="parameter_description"><p>Number of months to add.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.15.8"></a><h4>Returns</h4>
<p> a time_t value containing <em class="parameter"><code>time</code></em>
plus the months added.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-year-begin-with-zone"></a><h3>time_year_begin_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_year_begin_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Returns the start of the year containing the given time_t, using the given
timezone.
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.16.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.16.6"></a><h4>Returns</h4>
<p> the beginning of the year.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-month-begin-with-zone"></a><h3>time_month_begin_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_month_begin_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Returns the start of the month containing the given time_t, using the given
timezone.
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.17.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.17.6"></a><h4>Returns</h4>
<p> the beginning of the month.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-week-begin-with-zone"></a><h3>time_week_begin_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_week_begin_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> week_start_day</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Returns the start of the week containing the given time_t, using the given
timezone. week_start_day should use the same values as <code class="function">mktime()</code>,
i.e. 0 (Sun) to 6 (Sat).
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.18.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>week_start_day</p></td>
<td class="parameter_description"><p>Day to use as the starting of the week.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.18.6"></a><h4>Returns</h4>
<p> the beginning of the week.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-day-begin-with-zone"></a><h3>time_day_begin_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_day_begin_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Returns the start of the day containing the given time_t, using the given
timezone.
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.19.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.19.6"></a><h4>Returns</h4>
<p> the beginning of the day.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-day-end-with-zone"></a><h3>time_day_end_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">time_t</span>
time_day_end_with_zone (<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Returns the end of the day containing the given time_t, using the given
timezone. (The end of the day is the start of the next day.)
NOTE: this function is only here to make the transition to the timezone
functions easier. New code should use icaltimetype values and
<code class="function">icaltime_adjust()</code> to add or subtract days, hours, minutes & seconds.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.20.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time_t value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Timezone to use.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.20.6"></a><h4>Returns</h4>
<p> the end of the day.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="time-to-gdate-with-zone"></a><h3>time_to_gdate_with_zone ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
time_to_gdate_with_zone (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> *date</code></em>,
<em class="parameter"><code><span class="type">time_t</span> time</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *zone</code></em>);</pre>
<p>Converts a time_t value to a <a href="/usr/share/gtk-doc/html/glib/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> structure using the specified timezone.
This is analogous to <a href="/usr/share/gtk-doc/html/glib/glib-Date-and-Time-Functions.html#g-date-set-time"><code class="function">g_date_set_time()</code></a> but takes the timezone into account.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.21.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>date</p></td>
<td class="parameter_description"><p>Destination <a href="/usr/share/gtk-doc/html/glib/glib-Date-and-Time-Functions.html#GDate"><span class="type">GDate</span></a> value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>A time value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>zone</p></td>
<td class="parameter_description"><p>Desired timezone for destination <em class="parameter"><code>date</code></em>
, or NULL if the UTC timezone
is desired.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="icaltimetype-to-tm"></a><h3>icaltimetype_to_tm ()</h3>
<pre class="programlisting">struct <a class="link" href="eds-Main-Utility-Toolbox.html#tm" title="struct tm"><span class="returnvalue">tm</span></a>
icaltimetype_to_tm (<em class="parameter"><code><span class="type">struct icaltimetype</span> *itt</code></em>);</pre>
<p>Convers an icaltimetype structure into a GLibc's struct tm.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.22.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>itt</p></td>
<td class="parameter_description"><p>An icaltimetype structure.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.22.6"></a><h4>Returns</h4>
<p> The converted time as a struct tm. All fields will be
set properly except for tm.tm_yday.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2.22.html" title="Index of new symbols in 2.22">2.22</a></p>
</div>
<hr>
<div class="refsect2">
<a name="icaltimetype-to-tm-with-zone"></a><h3>icaltimetype_to_tm_with_zone ()</h3>
<pre class="programlisting">struct <a class="link" href="eds-Main-Utility-Toolbox.html#tm" title="struct tm"><span class="returnvalue">tm</span></a>
icaltimetype_to_tm_with_zone (<em class="parameter"><code><span class="type">struct icaltimetype</span> *itt</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *from_zone</code></em>,
<em class="parameter"><code><span class="type">icaltimezone</span> *to_zone</code></em>);</pre>
<p>Converts a time value from one timezone to another, and returns a struct tm
representation of the time.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.23.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>itt</p></td>
<td class="parameter_description"><p>A time value.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>from_zone</p></td>
<td class="parameter_description"><p>Source timezone.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>to_zone</p></td>
<td class="parameter_description"><p>Destination timezone.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.23.6"></a><h4>Returns</h4>
<p> The converted time as a struct tm. All fields will be
set properly except for tm.tm_yday.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2.22.html" title="Index of new symbols in 2.22">2.22</a></p>
</div>
<hr>
<div class="refsect2">
<a name="tm-to-icaltimetype"></a><h3>tm_to_icaltimetype ()</h3>
<pre class="programlisting">struct <span class="returnvalue">icaltimetype</span>
tm_to_icaltimetype (<em class="parameter"><code><span class="type">struct tm</span> *tm</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> is_date</code></em>);</pre>
<p>Converts a struct tm into an icaltimetype.</p>
<div class="refsect3">
<a name="id-1.5.5.3.5.24.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tm</p></td>
<td class="parameter_description"><p>A struct tm.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>is_date</p></td>
<td class="parameter_description"><p>Whether the given time is a date only or not.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.3.5.24.6"></a><h4>Returns</h4>
<p> The converted time as an icaltimetype.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2.22.html" title="Index of new symbols in 2.22">2.22</a></p>
</div>
</div>
<div class="refsect1">
<a name="eds-Calendar-time-utilities.other_details"></a><h2>Types and Values</h2>
</div>
</div>
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