How you can setup a custom countdown timer in OBS Studio : r/obs
Ultimate Tutorial: How To Add a Countdown Timer in OBS
My Stream Timer - A count up and countdown timer for streamers that integrates into OBS/SLOBS and Stream Deck! Used by 50,000 streamers around the globe!
Create a Countdown Timer for Twitch and StreamElements - OBS Tutorials - Tips and Tricks for OBS and SLOBS 2021
Twitch new followers, subs and bits increase timer (align left) - stream widget
Create a Stream Countdown Timer for Twitch with JavaScript
OBS Studio - Adding Countdown Timers for Twitch or YouTube Gaming - YouTube
Introducing My Stream Timer: A Countdown Timer for OBS - James Montemagno
How To Add A COUNTDOWN TIMER To Streamlabs OBS - Stream Starting Soon - YouTube
Add a Countdown TIMER to OBS studio - 4 different methods (Obs tutorial) - YouTube
How To Make a Countdown / Timer on StreamLabs OBS | SSTP - YouTube