Home / DatasetsOpen data · CC BY 4.0 Open time-zone datasets Small, documented datasets for researchers, educators, journalists and developers. Each file includes its review date, scope and limits.
Global city and IANA reference 83 priority cities with country code, IANA zone, week start and typical weekend.
Working-hours overlap 2026 8 city pairs on two dates, calculated in 30-minute intervals.
Licence and citation Reuse under CC BY 4.0 with attribution to TimeNivo and a link to the corresponding dataset page.
Read the report Method and primary references Time-zone results use named IANA zones through the runtime’s internationalization engine. Weekend conventions are planning defaults, not legal advice. Announcement-dependent public holidays require confirmation.
Global DST transitions 2026 54 offset changes across 63 distinct IANA zones represented by 83 cities.
