Ключевые слова: 22, abstract, anniversary, apr, april, background, birthday, board, business, calendar, campaign, celebrate, celebration, change, climate, concept, consumption, date, day, earth, environment, event, festival, globe, greenie, grey, holiday, month, nature, peace, plan, planet, remind, reminder, resource, schedule, season, sign, symbol, table, tearoff, text, the, time, vintage, week, wooden, year,