Developer Platform & Timekeeping Infrastructure
Build with reliable time infrastructure. Integrate atomic clock synchronization, global IANA timezone lookups, and solar transit data into your projects.
Sub-Millisecond Response
Calculated entirely with in-memory astronomical formulas and canonical IANA tzdata. No database latency or network bottlenecks.
Anonymous Free Tier
No API keys or credit cards required for standard integration. Up to 100 requests per minute with full CORS support.
Authoritative Sources
Maintained strictly in sync with the IANA tz database, NOAA solar position algorithms, and ISO-8601 specifications.
Quickstart Integration
Query current time or convert coordinates with standard HTTP requests:
curl -X GET "https://www.timenumbers.com/api/v1/time"curl -X GET "https://www.timenumbers.com/api/v1/timezone/Asia/Kolkata"curl -X GET "https://www.timenumbers.com/api/v1/sun/delhi"curl -X GET "https://www.timenumbers.com/api/v1/convert?from=Asia/Kolkata&to=America/New_York,Europe/London&time=14:30"Reliable In-Memory Timezone Resolution
TimeNumbers provides software teams with fast, resilient chronometry services. Calculate cross-timezone business overlaps, resolve astronomical solar curves, and validate device clock accuracy without running bulky libraries or managing maintenance overhead.
Start querying immediately using simple HTTP requests from curl, Node.js, Python, or client-side frontends.
Zero-Config Anonymous Access
Zero-config anonymous access, sub-millisecond in-memory resolution, and authoritative IANA/NIST standards.
Authoritative Standards: IANA, NOAA, and NIST
Zero-config anonymous access, sub-millisecond in-memory resolution, and authoritative IANA/NIST standards.
Frequently Asked Questions: TimeNumbers Developer Platform
Common queries, time calculations, and scientific explanations
Explore Developer Tools & Widgets
Quick access to international capitals, timezone offsets, chronometry tools, and horology guides