Set timer for 21 seconds
Settings for alarm at 21 seconds
On this page you can set alarm for 21 seconds from now. It is free and simple online timer for specific time period - set 21 second timer or with another words twenty-one second timer. Just click on the button "Start timer" and online timer will start. If you like to sleep and think on wake me up in 21 seconds, this online countdown timer page is right for you. Set timer for 21 seconds and a timer wakes you in time. Take look on instructions on "Online timer" page for more information.