If you ever fought, this is a handy reference.
This DEV post shares a public world time API that works without sign-ups or API keys, and it’s frontend-friendly via CORS.
Highlights:
- Timezone + DST handled
- IP-based timezone detection endpoint
- Simple GET requests more info
Read it here: https://dev.to/time-now-api/i-built-a-free-open-world-time-api-no-api-keys-cors-enabled-5en
If you work on global scheduling. Hope it helps.