Ключевые слова: 5, appointment, april, business, calendar, celebration, congratulation, data, date, deadline, design, entry, event, exploration, fandom, fictional holiday, film, hand, holding, holiday, important, mark, marker, meeting, memory, message, month, note, notebook, notice, organizer, paper, pen, planner, red, remember, responsibility, save the date, schedule, science, science fiction, season, space month, spring, star trek, success, television, text, writing,