Ключевые слова: 20, 20th, agenda, appointment, background, begin, birth, birthday, business, calendar, concept, conceptual, corporate, daily, date, day, day 20, deadline, design, diary, element, event, holiday, illustration, important, june, june 20, meeting, modern, month, note, number, object, office, organize, organizer, page, plan, planner, remember, remind, reminder, schedule, sign, summer, time, twentieth, week, year,