Ключевые слова: 20, 20th, agenda, appointment, background, birthday, business, calendar, celebration, countdown, daily, date, day, deadline, diary, education, event, february, holiday, important, meeting, memo, month, monthly, note, number, office, organizer, page, paper, plan, planner, red, reminder, schedule, scheduler, school, set, sign, symbol, text, time, today, twentieth, twenty, week, weekdays, winter, workplace, year,