What it is
Hourora shows the exact time where you are and anywhere else: a world clock, a page for every city and country, a time-zone converter, a meeting planner, daylight-saving dates, and instruments such as a timer, a stopwatch, countdowns and a calendar. It is free, needs no account and works in 18 languages.
How it keeps time
Every offset, abbreviation and clock change comes from the IANA Time Zone Database, which Hourora ships itself (release 2026e) instead of relying on the possibly older copy in your browser. Your device clock is checked against Hourora’s server, and the difference is corrected on screen with its margin of error. Sunrise, sunset and the solstices are calculated with the NOAA solar equations and Jean Meeus’s “Astronomical Algorithms”.
Where the data comes from
Time-zone rules: IANA tzdata (public domain). Cities and countries: Natural Earth (public domain), with localized names where an established one exists. Flags: public-domain artwork. Country and time-zone names in each language come from your browser’s own internationalization data.
Privacy in brief
Your clocks and settings stay in your browser. Hourora has no accounts, uses cookieless analytics, and shows advertising only with your consent where the law requires it. The privacy policy has the details.
Contact
Questions, corrections and ideas are welcome at privacy@hourora.app.