About World Time Zone

Remote teams and freelancers coordinating meetings across time zones, people with friends or family abroad, and travelers planning a trip who want a quick overview of a destination's time, weather, and money before they dig deeper.

• Time zone comparator — add any number of cities and see their current time, offset, and business-hours overlap.
• Chart view — hour-difference bars and a 24-hour overlap chart to find the best meeting window.
• Map view — a world map with a live day/night terminator.
• Sunrise & sunset — sunrise, sunset, twilight, golden hour, and moon phase per city.
• Alerts — optional browser notifications for DST changes, city alarms, and end-of-business-hours, all handled client-side.
• Weather — current conditions and a 7-day forecast.
• Currency — exchange rates and a simple converter.
• News — local headlines.
• Flights — distance-based price and duration estimates (see the disclaimer on that page — these are not real fares).

• Weather — Open-Meteo (open-meteo.com), a free, no-key weather API.
• Currency — Frankfurter (frankfurter.dev), serving European Central Bank reference exchange rates.
• News — Google News RSS feeds.
• Map boundaries — Natural Earth (naturalearth.com) 110m land-polygon data, public domain, bundled with the site.
• City and country names — Wikidata (wikidata.org), a free knowledge base (CC0), used to show city and country names in each language.

There's nothing to sign up for. Your city list and preferences are saved locally in your own browser — see our Privacy Policy for details.

Feedback or questions? See our Contact page.