Ключевые слова: accuracy, appointment, backward, chronometer, clock, competition, count, countdown, countdown timer, counter, counting, december, detonation, dial, digit, e minus, electronic, encounter, eve, event, explosive, happy new year, hour, interval, l minus, launch, measurement, meter, minute, new year, new year countdown, number, precision, quick, race, second, sequence, set, spacecraft, speed, start, stop, stopwatch, time, time remaining, timepiece, timer, tminus,