Ключевые слова: 2021, agenda, annual, appointment, background, business, calendar, calender, check, close, concept, daily, date, day, deadline, desk, diary, event, holiday, important, job, management, meeting, memo, memory, month, monthly, note, notice, number, organizer, page, paper, plan, planner, planning, preparation, remind, reminder, schedule, table, time, travel, up, vacation, week, white, work, year, yearly,