# Countdown **URL:** \ **Category:** Ask for Help\ **Created:** [March 30, 2021, 8:03pm UTC](https://community.glideapps.com/t/countdown/24940 "2021-03-30T20:03:40Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Mark\_Turrell](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/mark_turrell/32/26605_2.png) [@Mark\_Turrell](https://community.glideapps.com/u/Mark_Turrell)\ **Post date:** [March 30, 2021, 11:05pm UTC](https://community.glideapps.com/t/countdown/24940/2 "2021-03-30T23:05:28Z")
A countdown timer? Onscreen? Easy now! I made one this evening 🙂 My use case: a person does a corona test and needs to wait 15 mins to be able to take a photo - so onscreen I want the countdown to appear after they have put drops onto the test cassette… and then have a button to continue once the time remaining is 0. So one column - start time Another column - the 15 min wait Next - a math column - time photo taken (start) + the time to add on (I have mins, so need to convert) = photo + (min/60/24) Next - another math column - so have the countdown in mins to the deadline === (whentotakephoto - now) \* 60 \* 24 And then a nice template column to make it look pretty - x mins to wait And I display that as text on my form… and the screen refreshes every 5 secs or so. I then have an extra bit - before the countdown is done, the button is greyed out and is basically ‘waiting’ … and then when an if-the-else is set (countdown left = 0) then the button appears. Magic 🙂 ![Screenshot 2021-03-31 at 01.05.01](https://us1.discourse-cdn.com/flex002/uploads/glideapps/original/3X/8/1/81f9fc2235b09d108781955878d7ec1a1d542e6b.png) ![Screenshot 2021-03-31 at 01.02.07](https://us1.discourse-cdn.com/flex002/uploads/glideapps/original/3X/3/c/3c46ab5f94de5d4c432a2c934031b5d184a027bb.png) --- _[View the full topic](https://community.glideapps.com/t/countdown/24940)._