Wake me up in 13 hours 47 minutes. Set timer for 13 hours 47 minutes. Set the alarm for 13 hours 47 minutes from now. It is a free and easy-to-use countdown timer.
Set this 13 hours 47 minutes timer and let the countdown start. Use it to control the time limit of any activity and be notified when that limit has been reached. When the countdown stops, an alarm sound will ring.
Start 13 hours 47 minutes timer.