About.

What Time Meridian does

Time Meridian displays the current time — down to the second — for a place you choose, and lets you compare, convert and calculate across time zones. Alongside the clock you'll find a time-zone converter, a Unix timestamp tool, year calendars, sunrise and sunset times, and the exact difference between any two places.

It is a pure reference tool: there are no accounts, and everything works in the browser.

Precision — the exact time, not your device's time

Your computer or phone clock is often wrong by seconds or even minutes. When you open Time Meridian, the page measures the difference between your device clock and our server's clock: it makes several timing round-trips, keeps the fastest (most accurate) measurement, and uses half the round-trip as its error bar. The clock you see is then corrected by that offset, so it shows real time rather than whatever your device happens to think.

The display updates every second and stays live for as long as the page is open. If the correction can't be measured, the clock falls back to your device time rather than showing nothing.

Accuracy — time zones and daylight saving

Every offset, and every daylight-saving transition, is derived from the IANA Time Zone Database — the same authoritative dataset that operating systems and programming languages rely on. Because zones are resolved from IANA identifiers (such as "America/Los_Angeles" or "Europe/London"), clocks automatically move forward and back with local daylight-saving rules, including the many regional exceptions where some places observe DST and neighbours don't.

When the underlying time-zone rules are updated, the site follows them — you never have to adjust anything by hand.

What you can find here

Time Meridian currently covers hundreds of the world's most-searched locations — around 200 cities, 70+ countries, key states and regions, and 30 named time zones — each with its live local time, UTC offset, daylight-saving status, and notable quirks.

For each place you can also see the time difference from your own location, sunrise and sunset, and jump into the converter or calendar. This is a curated, hand-checked set rather than an exhaustive gazetteer, and coverage keeps expanding.

Where the data comes from

Time-zone offsets and daylight-saving rules come from the IANA Time Zone Database (iana.org/time-zones), the global standard for time-zone information.

Geographic place names and coordinates follow open geographic references such as GeoNames (geonames.org). Sunrise and sunset are computed from each place's latitude and longitude using standard solar-position formulas.

Languages

Time Meridian is available in six languages — English, Français (French), Español (Spanish), Tiếng Việt (Vietnamese), ไทย (Thai) and Bahasa Indonesia — with localized place names, tool labels and descriptions. You can switch language from the row at the bottom of any page.