Convert time between different time zones around the world
Time zones divide the world into regions that observe the same standard time, typically offset from Coordinated Universal Time (UTC) in one-hour increments. The system was adopted in the late 19th century to standardize timekeeping for railways and telecommunications. Common abbreviations include EST (Eastern Standard Time, UTC-5), PST (Pacific Standard Time, UTC-8), GMT (Greenwich Mean Time, UTC+0), CET (Central European Time, UTC+1), and JST (Japan Standard Time, UTC+9).
Daylight Saving Time (DST) adds another layer of complexity. Most of North America and Europe shift clocks forward by one hour in spring and back in fall, meaning the offset between two locations can change throughout the year. For example, the difference between New York and London is normally 5 hours, but it briefly becomes 4 or 6 hours during the weeks when only one region has transitioned.
Accurate time zone conversion is essential for scheduling international meetings, coordinating with remote teams, planning travel across regions, and catching live events broadcast from other countries. When planning across time zones, always confirm whether DST is in effect for both locations to avoid missed appointments or confusion.