This program is work calendar for people which work in shifts. It can define work mode for each day, for yourself and another three persons(4 shifts). Days indicates with the helps of different colors, each day has own color. Colors define by user. Program can work in three modes: single shift, many shifts, and filter mode. In a single shift mode user see only one shift in the calendar and each field has color of corresponding day.In many shifts mode calendar display few shifts(up to 4), using shapes in the corners of date fields. Each shape has color of day in corresponding shift.In filter mode calendar shows days which accords to established filter.Program has alarm clock function.Program also has a widget.