Ключевые слова: 13, 13th, appointment, autumn, background, birthday, business, calendar, computer, concept, conceptual, corporate, course, daily, date, day, design, designer, diary, elearning, empty space, event, fall, freelance, glasses, idea, important, laptop, message, month, monthly, note, notice, number, oct, october, office, organize, organizer, outstaffing, planner, remember, remind, reminder, sign, thirteenth, thiteen, time, tomorrow, workplace,