Does the world clock handle daylight saving time?

Each city uses the browser’s installed IANA time zone data for the instant shown, rather than a fixed offset table. Those rules include daylight saving where the browser knows it. Update your browser when governments change their rules. For example, under the 2026 rules London is five hours ahead of New York in September, four hours ahead between the UK and US autumn changes, then five hours ahead again. Browser data may differ from the operating system’s copy.

Can I show analog clocks with a second hand?

Choose Analog in the Face controls. Each face shows hour and minute hands from that city’s current time; the Seconds control adds or hides a second hand. The numeric time and date stay under the face, including am or pm on a 12 h clock, so midnight, noon and different dates remain clear. Digital switches back to the numeric wall.

Why do some city differences include 30 or 45 minutes?

The difference is computed in minutes for the instant shown. Kolkata is UTC+5:30 and Kathmandu is UTC+5:45 under current rules, so from New York during daylight saving they read +9:30 and +9:45. A difference is relative to your device’s local zone; it is not necessarily the city’s offset from UTC.

How do I find a city or country?

Search a supported city alias or an IANA zone name such as Europe/Madrid. The list includes extra aliases such as Boston, Bengaluru and Munich; accents are optional. For India choose Kolkata or Bengaluru, for Japan Tokyo, for the Philippines Manila and for the UK London. If a city is absent, choose a known city in the same time zone. A state or country may span several zones: Texas, Florida and Arizona should not be treated as one universal clock. Pick the specific city whose rules you need.

Are EST and MST the same as a city’s current time?

Fixed EST means UTC−5 and fixed MST means UTC−7. New York and Denver can instead use daylight time in summer; Phoenix generally does not follow that same seasonal rule. Search Denver for the US Mountain zone’s current seasonal rules or Phoenix for that city’s rules. This wall uses named regional zones, so it does not silently substitute them for fixed EST or MST. Search UTC for a reference clock. Time zone abbreviations can be ambiguous; use the full zone name when comparing dates or scheduling.

Can I convert a chosen time or plan a meeting?

This wall shows the current instant. Use the linked Meeting Planner to choose a date, compare working hours and select one of 24 hourly samples beginning at 06:00 on the device-local date; its results show that instant in the other cities. The planner samples whole hours and does not supply an arbitrary-minute conversion input. World Clock itself has no chosen-time input, geographic map, city-specific alarm or countdown.

How do I fill the screen with the world clock?

Choose the cities and display settings, then press Full screen. When the browser allows native fullscreen, the wall fills the screen. Otherwise it fills this tab. Large walls scroll so every city remains reachable. Press Escape or Exit full screen to return. Browser permissions and device support affect native fullscreen.

Does the wall stay accurate in a background tab?

The visible clocks read the device clock rather than accumulating timer ticks. A browser can pause drawing while the tab is hidden; returning to the tab or focusing the window refreshes the instant and local reference time zone. This prevents accumulated timer drift but cannot correct an inaccurate device clock or stale zone rules.

What is saved and copied?

Deliberate city and display changes are stored in this browser, including an empty wall. Clearing site data removes them. The selected cities and times are not sent by this tool. Copy captures the instant when pressed, with tab-separated city, time, date, difference and zone tag columns. Normal clock ticks do not alter a pending snapshot; changing the board or display replaces its confirmation.

World Clock

Compare live digital or analog clocks for cities and time zones on one wall. Search the supported city aliases or IANA zone names, add up to 24 clocks, choose 12 h or 24 h and optional seconds, and copy a snapshot of the current times. Differences are measured from your device’s local time zone using the browser’s installed daylight-saving rules. Full screen uses the browser where available, with a view that fills this tab as a fallback.

Reading your clock and your time zone.

Add a city

Clock

Seconds

Face

Your chosen cities are remembered in this browser. Times use your device clock and the browser's installed zone rules, including daylight saving where supported. Update your browser if those rules change. Returning to the tab refreshes the clock and local reference zone. Copy captures the times at the moment you press it. To convert a chosen date and time or compare meeting hours, use the Meeting Planner.

Common questions

Does the world clock handle daylight saving time?: Each city uses the browser’s installed IANA time zone data for the instant shown, rather than a fixed offset table. Those rules include daylight saving where the browser knows it. Update your browser when governments change their rules. For example, under the 2026 rules London is five hours ahead of New York in September, four hours ahead between the UK and US autumn changes, then five hours ahead again. Browser data may differ from the operating system’s copy.
Can I show analog clocks with a second hand?: Choose Analog in the Face controls. Each face shows hour and minute hands from that city’s current time; the Seconds control adds or hides a second hand. The numeric time and date stay under the face, including am or pm on a 12 h clock, so midnight, noon and different dates remain clear. Digital switches back to the numeric wall.
Why do some city differences include 30 or 45 minutes?: The difference is computed in minutes for the instant shown. Kolkata is UTC+5:30 and Kathmandu is UTC+5:45 under current rules, so from New York during daylight saving they read +9:30 and +9:45. A difference is relative to your device’s local zone; it is not necessarily the city’s offset from UTC.
How do I find a city or country?: Search a supported city alias or an IANA zone name such as Europe/Madrid. The list includes extra aliases such as Boston, Bengaluru and Munich; accents are optional. For India choose Kolkata or Bengaluru, for Japan Tokyo, for the Philippines Manila and for the UK London. If a city is absent, choose a known city in the same time zone. A state or country may span several zones: Texas, Florida and Arizona should not be treated as one universal clock. Pick the specific city whose rules you need.
Are EST and MST the same as a city’s current time?: Fixed EST means UTC−5 and fixed MST means UTC−7. New York and Denver can instead use daylight time in summer; Phoenix generally does not follow that same seasonal rule. Search Denver for the US Mountain zone’s current seasonal rules or Phoenix for that city’s rules. This wall uses named regional zones, so it does not silently substitute them for fixed EST or MST. Search UTC for a reference clock. Time zone abbreviations can be ambiguous; use the full zone name when comparing dates or scheduling.
Can I convert a chosen time or plan a meeting?: This wall shows the current instant. Use the linked Meeting Planner to choose a date, compare working hours and select one of 24 hourly samples beginning at 06:00 on the device-local date; its results show that instant in the other cities. The planner samples whole hours and does not supply an arbitrary-minute conversion input. World Clock itself has no chosen-time input, geographic map, city-specific alarm or countdown.
How do I fill the screen with the world clock?: Choose the cities and display settings, then press Full screen. When the browser allows native fullscreen, the wall fills the screen. Otherwise it fills this tab. Large walls scroll so every city remains reachable. Press Escape or Exit full screen to return. Browser permissions and device support affect native fullscreen.
Does the wall stay accurate in a background tab?: The visible clocks read the device clock rather than accumulating timer ticks. A browser can pause drawing while the tab is hidden; returning to the tab or focusing the window refreshes the instant and local reference time zone. This prevents accumulated timer drift but cannot correct an inaccurate device clock or stale zone rules.
What is saved and copied?: Deliberate city and display changes are stored in this browser, including an empty wall. Clearing site data removes them. The selected cities and times are not sent by this tool. Copy captures the instant when pressed, with tab-separated city, time, date, difference and zone tag columns. Normal clock ticks do not alter a pending snapshot; changing the board or display replaces its confirmation.

Times use your device clock and your browser’s installed time zone rules. A wrong device clock or outdated browser zone data affects the results. This page does not synchronize with a time server.