🌍 World Clock
Below are the current times in major cities, updated every second.
Asia
Europe
Middle East & Africa
Americas
Oceania & Pacific
How to Use This Page
Every city clock updates each second, with time zones and daylight saving handled automatically from the IANA time zone database. Use the search box to filter cities, and click any card to expand it — you'll see the full date, the UTC offset, and the IANA zone identifier (like America/New_York). The color bar on each card is a day/night indicator: gold for daytime, indigo for night — a quick glance saves you from calling someone at 3 a.m.
UTC, GMT, and Why Offsets Aren't Enough
UTC (Coordinated Universal Time) is the modern atomic-clock standard; GMT is the older solar-time term that survives colloquially — for scheduling purposes they're interchangeable. But a fixed offset like "UTC+1" is not a time zone: London is UTC+0 in winter and UTC+1 in summer, yet both are the single zone Europe/London. That's why calendar software and this tool work with IANA zone names rather than raw offsets — the zone carries the full history of when a place changes its clocks.
The DST Mismatch Windows
The US and Europe change their clocks on different dates, which creates two short windows every year when their usual offset is off by one hour:
- Mid-to-late March: the US springs forward on the second Sunday of March, Europe on the last Sunday. For those 2–3 weeks, New York–London shrinks from 5 hours to 4.
- Late October to early November: Europe falls back on the last Sunday of October, the US on the first Sunday of November — one week where the gap shrinks again.
- Southern hemisphere runs opposite: Sydney's DST spans roughly October to April, so the Sydney–London offset swings between 9 and 11 hours across the year.
- Many regions never change: most of Asia (Taipei, Tokyo, Singapore, India), plus Arizona and Queensland, stay fixed year-round — meetings with clock-changing regions will drift by an hour from their perspective.
Practical rule: create recurring invites in the host city's time zone and let calendars convert, never in a fixed UTC offset.
Frequently Asked Questions
Where does the time come from?
From your device's system clock, converted into each city's zone. Modern operating systems sync over NTP, so the display is accurate to the second — but if your device clock is wrong, every city shifts together.
How are daylight saving rules kept correct?
The tool uses the Luxon library backed by the IANA time zone database — the same source operating systems use — which encodes each region's current and historical rules, including tricky cases like Morocco's Ramadan pauses. Expand a card to see whether that city is currently on DST.
Why do some cities share an offset but get separate cards?
Because zones diverge: two places on the same offset today may adopt different rules tomorrow (countries do revise their time laws), and people search by city name, not by zone.
My city isn't listed — what should I do?
Search for a major city in the same zone (San Jose → Los Angeles, Manchester → London). If a city you use often is missing, email us and we'll consider adding it.