/usr/share/yaz/z39.50/datetime.asn is in libyaz4-dev 4.2.30-4+b6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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{Z39-50-userInfoFormat dateTime (6)} DEFINITIONS ::=
BEGIN
IMPORTS IntUnit FROM Z39-50-APDU-1995;
DateTime ::= SEQUENCE{
date [1] Z3950Date OPTIONAL,
time [2] Z3950Time OPTIONAL
-- one or the other, or both
}
Z3950Date ::= SEQUENCE{
year [1] IMPLICIT INTEGER,
-- For "positive" years, i.e. 1 AD or later, supply
-- the absolute year, e.g. If the year is 1995, supply
-- the integer 1995; the value 95 would indicate the
-- year 0095.
-- For "negative" years, e.g. 1 BC or earlier, -1
-- represents 1 BC, -2 represents 2 BC, etc. Zero is
-- invalid, because there was no year zero.
partOfYear [2] CHOICE{ -- may be omitted if only year is significant
monthAndDay [1] IMPLICIT SEQUENCE{
month [2] IMPLICIT INTEGER,
-- value 1-12
day [3] IMPLICIT INTEGER OPTIONAL
-- may be omitted if only year and month
-- are significant. Value 1-31.
},
julianDay [2] IMPLICIT INTEGER, -- Value 1 - 366.
weekNumber [3] IMPLICIT INTEGER, -- Value 1 - 53.
quarter [4] CHOICE{
first [1] IMPLICIT NULL,
second [2] IMPLICIT NULL,
third [3] IMPLICIT NULL,
fourth [4] IMPLICIT NULL},
season [5] CHOICE{
winter [1] IMPLICIT NULL,
spring [2] IMPLICIT NULL,
summer [3] IMPLICIT NULL,
autumn [4] IMPLICIT NULL}
} OPTIONAL,
flags [3] IMPLICIT SEQUENCE{
circa [1] IMPLICIT NULL OPTIONAL,
-- if this flag is set then the date is "approximate".
era [2] CHOICE{
-- If era occurs, partOfYear should not occur.
decade [1] IMPLICIT NULL,
-- year must be multiple of 10.
-- For example, 1900 refers to
-- the decade covering the years
-- 1900 through 1909.
century [2] IMPLICIT NULL,
-- year must be multiple of 100.
millennium [3] IMPLICIT NULL
-- year must be multiple of 1000.
} OPTIONAL
} OPTIONAL
}
Z3950Time ::= SEQUENCE{
hour [1] IMPLICIT INTEGER,
-- Value 0-23.
minute [2] IMPLICIT INTEGER OPTIONAL,
-- value 0-59. May be omitted when hour only is
-- significant (in which case second and
-- partOfSecond must also be omitted).
second [3] IMPLICIT INTEGER OPTIONAL,
-- value 0-59. May be omitted when only hour, or
-- hour and minute, is significant (in which case
-- partOfSecond must also be omitted).
partOfSecond [4] IMPLICIT IntUnit OPTIONAL,
-- Use Unit System = 'si', Unit type = 'time';
-- Unit = 'second', with appropriate value and
-- scale factor.
zone [5] CHOICE{
local [1] IMPLICIT NULL,
utc [2] IMPLICIT NULL,
utcOffset [3] IMPLICIT INTEGER -- in minutes
}}
END
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