Ключевые слова: 29, abstract, annual, appointment, background, banner, business, calendar, celebrate, color, concept, date, day, decoration, design, element, event, february, flat, graphics, greeting, icon, illustration, inscription, isolated, layout, leap year, map, media, meeting, month, number, pattern, persistence, pictogram, plan, planning, reminder, schedule, sign, social, sticker, symbol, technology, template, text, week, year,