Today's Date and Current Time

The clock reads your device’s time and displays it in the time zone selected in your operating system. It refreshes every second. It does not independently synchronize with an atomic clock or measure the error in your device clock. If the time looks wrong, check your device’s automatic date, time, and time zone settings.

Midnight arrives at different moments around the world. For example, at 18:00 UTC on January 15 it is already 03:00 on January 16 in Tokyo. A date without a time zone cannot identify the same day everywhere. The world clock shows each city’s local date alongside its time.

Use a written month, such as 15 January 2026, in a message to avoid regional ambiguity. Use YYYY-MM-DD for a calendar date in data. For an exact moment, include a time and UTC offset, such as 2026-01-15T14:30:00Z. A birthday or invoice date usually needs a calendar date, not a timestamp.

The calculations run in your browser. Dates, birthdays, and conversion inputs are not submitted to a calculation service. Once a tool has loaded, it can calculate without another network request. Navigating to a different page still needs a connection; see the privacy page for information about site analytics.

Usually the device is set to a fixed offset instead of a named region, or automatic time-zone detection is off. A device set to “UTC+01:00” will not follow a region into or out of daylight saving time, while one set to “Europe/Paris” will. Choose your city or region in the system settings and turn on automatic time.

A new calendar date begins at local midnight, 00:00, in each time zone. The first places to reach a new date are Kiribati’s Line Islands at UTC+14; the last inhabited places are American Samoa and Niue at UTC−11. Because civil offsets span from UTC−12 to UTC+14, for part of every day three different calendar dates are in use somewhere on Earth.

The figure shown beside the clock is the ISO 8601 week number. Weeks start on Monday, and week 1 is the week that contains the year’s first Thursday. That rule means the first days of January can belong to the last week of the previous year. Some US calendars count weeks from Sunday instead; see our comparison of ISO and US week numbers.

Yes. Your browser applies the daylight-saving rules for your selected region, and the city clocks use the rules for each city. The offset shown under the clock is the one in effect right now, which is why it can differ from the standard offset printed in many references.

The line under the clock shows the time-zone region your device reports, such as America/Chicago or Europe/Paris, followed by its current UTC offset. Browsers read this from the operating system, which usually sets it from your network or location. If the region is wrong, the clock will be wrong by whole hours even though your device keeps accurate time, so correct it in your date and time settings.

No. 2026 has 365 days. The next leap year is 2028. A year is a leap year if it is divisible by 4, except century years, which must also be divisible by 400. That is why 2000 was a leap year and 2100 will not be.

Every year has 52 full weeks plus one extra day, or two in a leap year. Counted as ISO weeks, which run Monday to Sunday, 2026 has 53. A year gets a 53rd ISO week when it starts on a Thursday, or when it is a leap year that starts on a Wednesday.

The 24-hour clock numbers the hours of the day from 00 to 23, so 3:30 PM is 15:30. The 12-hour clock runs from 12 to 11 twice and adds AM or PM. Midnight is 00:00 or 12:00 AM, and noon is 12:00 or 12:00 PM. Use the 24 hr and 12 hr buttons above the clock to switch; the page remembers your choice.