Ключевые слова: 30th, agenda, animal day, annual, background, calendar, concept, daily, date, day, design, desk, diary, event, fall, hole, holiday, importance, important, information protection, meeting, month, note, november 30, number, object, organizer, paper, pets, plan, planner, protection, purpose, remind, reminder, save, schedule, sign, start, symbol, thirty, time, week, year, yellow,