Softonic

World Clock

Step 1 / 4 World clock

Use one IANA timezone per line, such as Europe/Madrid or America/New_York.

A distributed team spans timezones where “2 PM your time” is a small landmine. This clock lets you pin any number of cities to a single panel, all updating live, all correct for daylight saving on the dates they observe it. Drop in London, New York, Singapore and São Paulo and spot in two seconds which ones are asleep when you want to schedule a call.

How to use the world clock

  1. 1

    Add cities

    Search by city name; the tool knows 600+ cities across all IANA timezones.

  2. 2

    See live times

    Every pinned city updates every second and shows date in local format.

  3. 3

    Scrub the scheduler

    Drag a time slider to see the equivalent local time in every pinned city.

  4. 4

    Share the board

    A URL captures your pinned cities so a colleague sees the same list.

Why cities matter more than timezone codes

Timezones like GMT+5 ignore daylight saving. Europe/London is GMT+0 in winter and GMT+1 in summer. IANA zone names (also called “Olson” names) encode the full rule history, including when a country started or stopped observing DST.

This clock uses IANA names internally, so “London” always means the correct offset on the specific date you are looking at.

Daylight-saving calendar

Region DST start DST end
EU Last Sunday in March Last Sunday in October
US / Canada 2nd Sunday in March 1st Sunday in November
Australia (NSW/VIC) 1st Sunday in October 1st Sunday in April
UK Same as EU Same as EU
Russia No DST (since 2011) —
India / China / Japan No DST —
Brazil No DST (abolished 2019) —

The EU Parliament voted to abolish DST in 2019 but the directive has stalled. The change may still happen sometime; the IANA tzdata will update when it does.

Meeting-scheduling rule of thumb

For distributed teams:

Handle dates carefully

Date across timezones is the sneaky gotcha. 23:00 Monday in Los Angeles is already 07:00 Tuesday in London and 14:00 Tuesday in Tokyo. Sending a Calendar invite for “Tuesday” can mean different days for different recipients. Calendar apps handle the conversion when both parties have their timezones set — confirm the times carefully when scheduling across the date line.

Frequently Asked Questions

Yes. It uses IANA tzdata, which encodes DST rules going back decades. So a time in “America/New_York” on a date in 2005 uses the pre-2007 DST schedule (last Sunday of April), not the current one.

Yes. UTC is always available as a fixed reference. GMT is essentially identical to UTC in day-to-day use.

The clock shows the correct offset either side of the transition automatically. The “spring forward” missing hour (2:00-3:00 AM) simply does not exist; the “fall back” repeated hour is shown once.

They are saved in local storage on your browser so they persist across sessions on the same device. Nothing is sent to a server.

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