The program can expect for any date the state of changing (work/day off) for the different types of non-standard office hours, as that:
three in three days (bar, shop)
days through three (guard)
day, night, two days off (port)
Creation of description of other office hours is possible, it is possible to set seven shifts of different duration.
GNU General Public License
Version 1.17: At the end of the main screen, added link to the setup screen.