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data validator

Timezone Validator

Validate IANA timezone identifiers (e.g., America/New_York) client-side.

Results

Processing…
Status
Processing...
Details
Processing...
Current offset
Processing...

Rules & checks

Uses Intl.DateTimeFormat to verify IANA zones (e.g., America/New_York, Europe/London).

Returns current offset label when valid.

Runs entirely client-side/offline; no data leaves the page.

When to use it

  • QA API payloads and configs with timezones
  • Validate CSV imports/exports
  • Check user input for scheduling apps

Tips

  • Prefer IANA zones over fixed offsets to handle DST correctly
  • Normalize user input to a canonical timezone in your systems

Examples

Valid

  • America/New_York -> valid

Valid

  • Europe/London -> valid

Invalid

  • America/Nowhere -> invalid

FAQs

Is anything uploaded?
No. Validation runs locally and clears on refresh.

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Format check only; does not handle business rules or DST logic beyond validating the zone string.