Ключевые слова: 20, 20th, annual, appointment, background, business, calendar, closeup, concept, date, day, deadline, diary, document, event, important, mark, marker, meeting, memo, month, monthly, new, note, number, number twenty, object, office, organize, organizer, page, paper, period, plan, planner, red, reminder, republic day, schedule, scheduling, sign, successful, time, twentieth day, twenty, wait, week, white, work, year,