/usr/share/gridengine/calendars/day_s is in gridengine-common 6.2u5-7.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | calendar_name day_s
year 1.1.1997,6.1.1997,28.3.1997,30.3.1997-31.3.1997,18.5.1997-19.5.1997,3.10.1997,25.12.1997,26.12.1997=suspended
week mon-fri=20-6=suspended sat-sun=suspended
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