World Clock
View the current time in multiple cities around the world. Perfect for international coordination.
Time Zone Converter
Converted Time
October 4th, 2026 11:14 PM (Coordinated Universal Time)
World clock
Time zones around the world
The world is divided into 24 time zones, each spanning 15 degrees of longitude. The Prime Meridian (0° longitude) in Greenwich, London, defines Coordinated Universal Time (UTC).
Where offset is the time zone offset in hours (positive for east, negative for west).
Common time zones
| Time Zone | Offset from UTC | Major Cities | |-----------|-----------------|--------------| | UTC | 0 | London, Dublin, Lisbon | | GMT | 0 | London (winter), Accra, Monrovia | | CET | +1 | Paris, Berlin, Rome, Madrid | | EST | -5 | New York, Miami, Toronto | | CST | -6 | Chicago, Houston, Mexico City | | PST | -8 | Los Angeles, San Francisco, Seattle | | JST | +9 | Tokyo, Seoul, Pyongyang | | AEST | +10 | Sydney, Melbourne, Brisbane | | CST | +8 | Beijing, Singapore, Hong Kong |
How to use
- Select the source time zone (where the original time is)
- Enter the time in that zone
- Select the target time zone (where you want to see the time)
- The tool calculates and displays the converted time
Daylight saving time
Many countries observe daylight saving time (DST), shifting clocks forward by 1 hour in spring and back in autumn. The standard offsets above may change during DST periods:
- US DST: Second Sunday in March to first Sunday in November
- EU DST: Last Sunday in March to last Sunday in October
- Australia: First Sunday in October to first Sunday in April
Common use cases
- Coordinating international meetings
- Scheduling webinars with global audiences
- Planning travel itineraries
- Communicating with international colleagues
- Monitoring servers in different regions
FAQ
What is UTC? Coordinated Universal Time is the primary time standard by which the world regulates clocks and time.
How many time zones are there? There are 24 standard time zones, but some regions use half-hour or 45-minute offsets, resulting in more than 24 actual time zones.
Why does DST exist? Daylight saving time extends evening daylight during summer months, historically intended to reduce energy consumption.
How do I know if DST is in effect? Check the current date and the DST rules for the specific time zone.
Can I compare three or more time zones? Use the date difference calculator to compare multiple times across zones.