World Clock
A world clock helps you see what time it is in another city before you call, travel, schedule a meeting, or set a reminder.
At a glance
| Best for | Checking live local time in cities, countries, and time zones. |
|---|---|
| Uses | IANA time-zone data, UTC offsets, and current daylight-saving rules. |
| Start here | Browse world cities, time zone groups, or use the time zone converter. |
How the world clock works
Alarm.now groups live time pages by city, country, time-zone abbreviation, UTC offset, and IANA database name.
City time is the safest starting point
A city page is usually clearer than an abbreviation because it includes the place, its country, current offset, and daylight-saving status. If you know the location, start with world cities.
- Use city pages for meetings, travel plans, calls, and event times.
- Use country pages when a country may have more than one time zone.
Offsets explain the time difference
Every local time is measured against UTC. A page marked UTC+1 is one hour ahead of UTC; UTC-5 is five hours behind. Offsets can change when daylight saving time starts or ends.
- Check the current offset before scheduling across seasons.
- Use IANA pages for the most precise time-zone identity.
When to use a world clock
The most useful world clock pages answer a real task, not just a number on a screen.
Plan across countries
Before sending a meeting invite, check both cities and then confirm the result in the time zone converter. This reduces mistakes around midnight, weekends, and daylight-saving changes.
- Compare New York, London, Tokyo, Dubai, Singapore, and Sydney quickly.
- Set a browser alarm after you choose the local time.
Read the time-zone context
For technical scheduling, open IANA time zones and check the long-form time-zone name. IANA names such as Europe/London or America/New_York are more exact than short labels such as EST or GMT.
Related tools and guides
Frequently asked questions
What is a world clock?
A world clock shows the current local time in different places, usually by city, country, or time zone.
Why can a country have more than one time?
Large countries can span several time zones, so two cities in the same country may use different local times.
Does Alarm.now adjust for daylight saving time?
Yes. Time pages use current time-zone rules so the live clock reflects the active UTC offset.