Wake me up in 30 minutes 20 seconds. Set timer for 30 minutes 20 seconds. Set the alarm for 30 minutes 20 seconds from now. It is a free and easy-to-use countdown timer.
Set this 30 minutes 20 seconds 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 30 minutes 20 seconds timer.