If you ever fought, this is a handy reference.
This DEV post shares a public world time API that needs no accounts or keys, and it’s ready for browser fetch.
Highlights:
- Timezone + more info DST handled
- an /ip endpoint for timezone auto-detect
- copy-paste friendly usage
Link: 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.