If you ever fought, this might help.
This DEV post shares a free world time API that needs no sign-ups or read more API keys, and it’s CORS-enabled.
Highlights:
- DST + offsets included
- IP-based timezone detection endpoint
- quick start examples
Full post: https://dev.to/time-now-api/i-built-a-free-open-world-time-api-no-api-keys-cors-enabled-5en
If you work on frontend countdowns. Hope it helps.