API guides for building with time data.

Start with the guide that matches your integration, then follow the linked documentation and endpoint reference for the exact contract.

World Time API guide

How to request current time, timezone, offset, DST, and calendar data from TimeLogic API.

Resolve IANA timezones from timezone names, IP addresses, coordinates, and UTC offsets.

Convert Unix, Unix-millisecond, or ISO timestamps into timezone-aware JSON responses.

Check DST status and upcoming transitions for IANA timezones, IP locations, coordinates, or offsets.

Calculate elapsed time, differences, business days, and holiday-aware calendar results.

Resolve or convert multiple timezone targets in one request while preserving input order.

Install and configure the published TimeLogic API SDKs for TypeScript, Python, Rust, Go, Java, .NET, PHP, Ruby, Kotlin, and Swift.

Request signed JSON responses and verify the exact response body locally with the public key registry.

Use the TimeLogic OpenAPI contract, direct documentation, SDKs, and predictable monthly request plans.

Need the complete contract? Read the documentation or open the API reference.