Frequently Asked Questions

Each clock combines your device's clock with the official IANA time zone database built into your browser, which includes daylight saving time rules. If a clock looks wrong, check your computer or phone's date, time and time zone settings.

When you add a whole country, we use its capital's time zone. For countries with several time zones (such as the United States or Australia), you can choose another city, either when adding the clock or later with "Change city" in edit mode.

In your browser's local storage on this device. They aren't synced to other devices or browsers, and clearing site data or using a private window removes them.

Eight keeps the dashboard readable on every screen size. Remove a clock to add another.

From the European Central Bank's daily reference rates, delivered by the open-source Frankfurter service. They are published once per working day, around 16:00 Central European Time.

Reference rates are mid-market indicators. Banks, card issuers and exchange offices add a margin and sometimes fees, so the rate you are charged will differ.

The European Central Bank publishes rates for about 30 major currencies. Others are not available from this source.

No. We don't have a live flight data feed and never show invented statuses. Use the airport's official website (linked on each airport) or your airline.

From the great-circle distance between the two airports and a typical cruising speed, plus an allowance for taxi, climb and descent. Real schedules vary with winds, routing and aircraft. See the flight estimator.

It helps you research: it lists what to check and links to official government sources. Only the destination's authorities can confirm your requirements, and approval to travel never guarantees entry.

We link to official government travel advice services, such as those of the United States, United Kingdom, Canada and Australia. We don't write our own safety ratings.