Ключевые слова: 30 date, 30 nov, 30 november, appointment, background, business, calendar, color, colorful, concept, daily, daily calendar, date, day, deadline, design, element, event, flat, happy, holiday, icon, illustration, important, isolated, meeting, month, monthly, november, november 30, number, office, organizer, page, plan, planner, reminder, schedule, scheduler, sign, symbol, time, today, week, white, year,