I had to make a countdown clock in keynote today. Thought I’d share the .zip file here with a readme, AppleScript, and starting keynote file.
You can download it from my google drive here https://drive.google.com/drive/folders/1jTmJjD6xtZH-OUkqmSQsMU_vpZXr_WQI?usp=sharing
If you have any questions about it, then please ask!