Ключевые слова: 1, 1st, april, august, background, block, business, calendar, calendar blocks, concept, cube, date, day, deadline, december, diary, event, february, first, first of nov, holiday, january, july, june, march, may, meeting, month, new, new year, november, number, object, october, one, perpetual calendar, plan, schedule, september, sign, summer, symbol, time, wood, wooden, wooden calendar, year,