About Us

World Time Window is a free online world time service that helps travelers, remote workers, international businesses and anyone working across time zones find the correct local time for any place on Earth - instantly and accurately.

Who We Are

We built World Time Window to solve one everyday problem: knowing what time it is somewhere else. Instead of manually calculating UTC offsets or digging through confusing time zone lists, visitors can search any city, country or region and get the current local time, date, week day, sunrise and sunset times and live weather - all on one page, with no registration and completely free.

The site covers all 7 continents and 4 oceans, including 200+ countries, every first-level administrative region and more than 150,000 cities worldwide.

Where Our Data Comes From

Accuracy matters for a time website, so every piece of data has a traceable source:

• IANA Time Zone Database (Olson) - the authoritative international time zone database. Our clock engine reads it directly, which means daylight saving time (DST) changes and historical time zone reforms are handled automatically the moment they take effect, with no manual updates.
• GeoNames - the open geographic database, providing city coordinates, administrative hierarchy and population data for more than 150,000 cities. It is re-synchronized automatically on a regular schedule.
• Open-Meteo - provides our live weather forecasts and sunrise/sunset calculations, refreshed every 2 hours.
• IP geolocation (ipwho.is) - used only to detect the visitor's time zone so the homepage can show the current local time of the visitor's location. No personal identity information is collected or stored (see our Privacy Policy).

What We Offer

• Current local time and date for any city, region or country, with live ticking clocks;
• Complete world time zone list with UTC offsets and DST status;
• Time zone converter - compare two or more time zones at a glance;
• Time difference calculator between any two cities;
• Cross time zone meeting scheduler - find a common working time for participants anywhere in the world;
• Sunrise and sunset times for any location;
• 3-day live weather forecast for any city.

How to Use the Site

Use the search box in the top navigation to jump straight to any city, or browse by continent - country - region - city. The converter and calculator pages accept time zone names (for example America/New_York) as well as city names, so you can compare almost any location in the world.

Accuracy and Updates

Our geographic database is synchronized automatically at regular intervals, the IANA time zone rules are read live on every request, and weather data refreshes every 2 hours. All times shown are the official local times of the selected place, including correct DST adjustments.

Why You Can Trust Us

World Time Window is an independent, informational website. We do not require accounts, we do not sell user data and we display only factual data from the authoritative sources listed above. If you have questions, feedback or cooperation proposals, please visit our Contact page.