Data & Utilities

Time ZoneTime zone lookup and conversion

The Helix Time Zone API returns the current time, UTC offset, DST status, and abbreviation for any IANA time zone, plus conversion of any datetime between zones. Pure compute on a maintained zoneinfo database — no flaky external feed.

Free tier with 100 requests/month
Fast, cached responses
99.9% uptime target
Standard REST + JSON

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What is the Time Zone API?

How it works

1GET /lookup?tz=Europe/Berlin returns current datetime, ISO 8601 string, offset (+02:00), DST flag, weekday, and unix timestamp.
2GET /convert?time=2026-05-22T14:30&from=Europe/Berlin&to=America/New_York converts a datetime between zones.
3GET /list?q=Asia returns matching IANA time zones (full list ~600 entries).
4All endpoints are millisecond-fast — no external HTTP calls, just the system zoneinfo database.
5DST transitions are computed correctly for every supported zone (Berlin: +01:00 in winter, +02:00 in summer).

Endpoints

3 REST endpoints, all returning consistent JSON.

GET

/lookup

Current time and details for a time zone

GET

/convert

Convert a datetime between time zones

GET

/list

List supported IANA time zones

Code in 5 languages

Copy and paste into your project. Replace YOUR_API_KEY with your RapidAPI key.

// Time Zone API
const response = await fetch(
  "https://timezone-by-helix-api.p.rapidapi.com/lookup"
  {
    headers: {
      "X-RapidAPI-Key": "YOUR_API_KEY",
      "X-RapidAPI-Host": "timezone-by-helix-api.p.rapidapi.com"
    }
  }
);

const data = await response.json();
console.log(data);

What developers build with this API

Real use cases from production deployments.

Meeting Schedulers

Show 'Tue 3pm Berlin = Tue 9am NYC' on every invite. The biggest UX win in calendar apps over the past decade.

Global SaaS Apps

Render every timestamp in the user's local time zone. Store everything UTC; convert on the fly when displaying.

Log & Event Normalization

Convert vendor-supplied timestamps (often local) into UTC for storage and back to user-local for display.

Travel Itineraries

Display flight departure/arrival in both origin and destination time zones, with DST handled automatically.

Pricing

All tiers include this API. No credit card for free tier.

BASIC

Free

✓ 100 reqs/month
✓ Hard limit
✓ All endpoints

PRO

$9.99/mo

✓ 10,000/month
✓ +$0.005 each
✓ All endpoints

ULTRA

$29.99/mo

✓ 100,000/month
✓ +$0.002 each
✓ All endpoints

MEGA

$99.99/mo

✓ 1M+/month
✓ +$0.001 each
✓ All endpoints

View all 20 APIs included →

Frequently asked questions

Real answers to questions developers ask before integrating.

How accurate is the time?

Server clocks are NTP-synced — accuracy within milliseconds. The API returns the server's current time in the requested zone.

How many time zones are supported?

Every IANA time zone — about 600 entries, covering every region's official zone and historical variants.

Does it handle DST transitions correctly?

Yes — the underlying zoneinfo database is the authoritative source and tracks every change including same-day transitions.

Can I convert from an arbitrary timestamp?

Yes — pass any ISO 8601 datetime to /convert and we'll handle the rest.

What's the response format?

Standard {status, data, timestamp}. data includes timezone, datetime, date, time, utc_offset, offset_seconds, dst_active, abbreviation, weekday, unix_timestamp.

Ready to integrate Time Zone?

Get started with 100 free requests. No credit card. Production-ready in minutes.

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