Time Zone Converter
Compare times between cities around the world.
Conversion summary
New York, USA
10:30 AM
Friday, May 16, 2025
+ 13h 00m
ahead
Tokyo, Japan
11:30 PM
Friday, May 16, 2025
Time conversion controls and timeline
New York, USA
EDT (UTC -04:00)
Tokyo, Japan
JST (UTC +09:00)
Popular conversions
Convert common time zones
Use quick pair pages for common business, travel, and remote-work time differences.
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FAQ
Time zone converter questions
How do I convert time between time zones?
Choose a From city, choose a To city, then set the date and time. ClockHorizon shows the converted time, date, UTC offsets, and a visual 24-hour comparison.
Does the converter handle daylight saving time?
Yes. The converter uses timezone rules for the selected city and date, including daylight saving changes where they apply.
Can I compare two cities by date?
Yes. Select a date and time to compare cities across the same day, next day, or previous day.
What is the difference between UTC, GMT, EST, PST, and IST?
UTC is the global time standard, GMT is a time zone commonly used by London in winter, EST and PST are North American time zones, and IST commonly refers to India Standard Time.