Timezone
Free tierIANA timezones, offsets, and DST transitions anywhere on earth.
About this API
Resolve a coordinate, IP, or place name to its IANA zone with the current UTC offset, DST status, next transition timestamp, and localized time formatting, backed by a tzdata mirror updated within hours of each release.
Common use cases
Quickstart
Every Zephiel API uses the same base URL, the same key header, and the same error envelope.
curl -X GET "https://zephiel.com/api/v1/timezone-api/zone" \
-H "X-Zephiel-Key: $ZEPHIEL_API_KEY" \
-H "Accept: application/json"Example response
{
"zone": "Africa/Lagos",
"utc_offset": "+01:00",
"dst_active": false,
"local_time": "2026-08-26T15:04:22+01:00"
}/v1/timezone-api/zoneTimezone for coordinates, IP, or place/v1/timezone-api/convertConvert a timestamp between zones/v1/timezone-api/transitionsUpcoming DST transitionsAll endpoints return JSON and accept the X-Zephiel-Key header. Rate limits are enforced per plan and reported in X-RateLimit-Remaining.
Plans can be changed or cancelled at any time. Overage is charged per 1,000 requests rather than hard-blocking your traffic.
Free
100 requests/mo
5 req/min
Free
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — not included
- Email support — not included
- Usage analytics and alerts — not included
- 99.9% uptime SLA — not included
- Webhooks — not included
- Priority support — not included
- Custom rate limits — not included
- 99.99% uptime SLA — not included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Starter
10,000 requests/mo
60 req/min
$8/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — not included
- Priority support — not included
- Custom rate limits — not included
- 99.99% uptime SLA — not included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Most popular
Pro
250,000 requests/mo
600 req/min
$32/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — included
- Priority support — included
- Custom rate limits — included
- 99.99% uptime SLA — included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Enterprise
Unlimited requests
Custom
$112/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — included
- Priority support — included
- Custom rate limits — included
- 99.99% uptime SLA — included
- Dedicated success manager — included
- SSO / SAML — included
- Custom SLA, DPA, and BAA — included
- Private deployment option — included
- Volume pricing — included
4.5
12 reviews
Ibrahim Diallo
Head of Platform
One key made the difference
Adding Timezone took ten minutes because the credential already existed. The vendor onboarding we skipped would have taken longer than the integration.
Nadia Haddad
Principal Engineer
Solved Meeting schedulers for us
We brought Timezone in for Meeting schedulers and it has not needed revisiting since. The response shape matched the documentation on the first call, which is rarer than it should be.
Diego Navarro
Tech Lead
Fast enough to sit in the request path
33ms median is quick enough that we call Timezone synchronously rather than queueing it. That removed a whole background worker from our architecture.
Lin Zhao
Backend Developer
Free tier covered the whole prototype
I built the entire log normalization flow against Timezone before anyone had to approve a purchase order. By the time we paid, we already knew it worked.
Fatima Bello
Operations Director
Replaced a fragile in-house timezone job
We had a script doing booking systems that broke every few months and only one person understood. Timezone replaced it in an afternoon and nobody maintains it now.
Pieter de Vries
Staff Engineer
Errors are actually readable
When something goes wrong Timezone says what and why, with a code I can branch on. I have integrated scheduling services that return 200 with an error buried in the body, so this is a relief.
Olamide Fashola
Technical Lead
Held up under real load
We push Timezone hard during peak and latency has stayed flat. No throttling surprises, no silent degradation — the numbers on the listing matched what we measured.
Isabella Ferreira
Software Engineer
Good coverage for utc
We checked Timezone against our own utc reference data before committing. Coverage was better than the incumbent we were paying four times as much for.
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