If you’ve ever battled, this might help.
Here’s a DEV write-up on a free world time API that needs no sign-ups or API keys, and it’s CORS-enabled.
Nice bits:
- Offsets + dst flag included
- Geo-IP https://lillieayx563359.ageeksblog.com/38121845/no-signup-timezone-api-no-api-keys-cors-ready