Our Data Sources & Technical Standards
Learn about the scientific authorities powering TimeNumbers: IANA Time Zone Database, NOAA solar algorithms, and Stratum-1 atomic timekeeping networks.
IANA Time Zone Database (tzdb)
Precision timekeeping demands authoritative source data. We do not rely on unverified third-party scrapers or estimated values. Every clock, solar phase, and calendar offset on TimeNumbers is derived directly from recognized scientific institutions and international standards bodies.
By uniting IANA timezone definitions, NOAA solar math, and direct NTP atomic calibration, we deliver tools you can trust for mission-critical planning.
NOAA Solar Ephemeris Standards
Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.
Stratum-1 Atomic Synchronization
Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.
GeoNames Global Geographic Data
Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.
Frequently Asked Questions: Horological Provenance
Common queries, time calculations, and scientific explanations
Explore Related Horology Platforms
Learn more about our atomic synchronization and global chronometry infrastructure.