Time API comparison: WorldTimeAPI alternatives and time zone APIs side by side

Short answer: if you are replacing worldtimeapi.org or choosing a time zone API, TimeLogic API is the one built for it. It keeps the exact WorldTimeAPI paths and fields, signs a response with Ed25519 when you ask for one (sign=true), and starts free.

Why TimeLogic API

• Exact WorldTimeAPI paths. /api/timezone, /api/ip, the same 15 fields and the .txt variants. Change the host and your parser keeps working.
• Signed responses. Ask for a signed response with sign=true and it carries an Ed25519 signature you can verify, so you can prove which time the API returned.
• Free plan: 10,000 requests per month. No credit card, instant signup, every endpoint. See pricing.
• Lookup by zone, IP or coordinates. IANA zone names, IPv4 and IPv6 addresses, the caller's own IP, latitude and longitude, or a UTC offset.
• Edge-routed. Requests are answered at the nearest Cloudflare edge; measured speed is below.

Time and time zone APIs compared

Facts about other services were read from each provider's own pages on October 30, 2026. Plans change, so check a provider's current terms before you rely on them.

"Not stated" means the provider's page did not say, not that the feature is missing.

What the columns mean

• API key: whether a request needs a key. TimeLogic issues one the moment you sign up.
• Free tier: the free allowance in the provider's own terms.
• WorldTimeAPI paths: whether old worldtimeapi.org code works by changing only the host. TimeLogic serves /api/timezone/..., /api/ip/..., the 15 fields and .txt. time.now documents WorldTimeAPI-style fields under its own /developer/api path, so the URLs change. The others use their own request and response formats.
• Signed responses: whether a response carries a signature you can check. TimeLogic signs with Ed25519 when you add sign=true.

Lookups each service lists

• TimeLogic API: IANA zone, IP (v4 and v6), coordinates, UTC offset, the caller's IP.
• timeapi.io: zone, coordinates, IP.
• time.now: zone, IP, the caller's IP.
• TimeZoneDB: zone and coordinates; city and IP on its premium plan.
• ipgeolocation.io: zone, IP, coordinates, city.
• API Ninjas World Time: city, state, country, coordinates.
• Google Time Zone API: coordinates plus a timestamp.

Moving from WorldTimeAPI to TimeLogic

1. Sign up for the Free plan and copy your key. Signup is instant and needs no card.
2. Change the host from worldtimeapi.org to api.timelogicapi.com and send your key. The WorldTimeAPI alternative guide shows the compatible routes.
3. Keep your parser. The migration guide has code for ten languages and a field-by-field table.

Need more than the current time? The same key covers conversion with strftime, DST transitions, business days with 862 holiday calendars in 249 countries, bulk lookups of up to 10 targets and signed responses.

What should I check before picking a time API?

1. Can it answer the lookups you need? Zone name, IP address, coordinates, or all three. TimeLogic answers all of them on every plan.
2. What happens when it fails? Look for a public status page and stable error bodies. TimeLogic publishes status and documents every error code in errors.
3. Licence and limits. "Free for non-commercial use", per-second rate limits and attribution requirements matter as soon as you ship.
4. Data freshness. Time zone rules change several times a year; the service should track tzdata releases. TimeLogic's WorldTimeAPI-compatible list has 597 zones, including America/Coyhaique.
5. Proof, if you need it. Signed responses let you prove which time the API returned, which matters for audit logs and licensing checks.

How fast is TimeLogic?

TimeLogic runs at the edge on Cloudflare's network, and the API's own work is small. Server-side, excluding network, it answered in a median of 18.1 ms with a p95 of 27.9 ms (p99 43.2 ms) on October 30, 2026: 1,000 warm requests to /v1/timezone, /v1/time/current, /v1/time/convert and /v1/time/dst at Cloudflare's Austin edge, each paired with a network-only probe on the same connection. On the Dallas and Los Angeles edges in the same hour the server-side median was 36.4 ms (p95 60.7 ms).

End to end, what you see is your round trip to the nearest Cloudflare edge plus that server time. The best end-to-end run on record: on October 25, 2026, warm requests to GET /v1/timezone, answered by Cloudflare's Seattle edge, took a median of 35 ms and a p95 of 39.4 ms, network included (20 sequential requests). Your numbers depend on your own connection and your distance to the nearest edge; every measurement with its date and route is in llms-full.txt.

Related guides

• World Time API guide: current time by zone, IP or coordinates.
• Time zone API guide: resolve the IANA zone for a zone name, IP address or coordinates.
• Try every route of the WorldTimeAPI-compatible API in the interactive reference.
• WorldTimeAPI alternative and migration guide.
• NTP vs a time API: which one your project needs.