Ключевые слова: 1, 1 december, agenda, appointment, birthday, block, business, calendar, celebrate, celebration, concept, conceptual, cube, date, day, deadline, december, december calendar, education, elearning, event, first day december, freelance, holiday, international, job, labor, lifestyle, month, monthly, notice, number, office, organizer, plan, planner, planning, reminder, schedule, season, start, symbol, time, week, white, winter, wooden, work, workplace,