Time Zone Converter
Convert time between world cities and see current times around the globe
// World Clocks — Live now
About Time Zones
The world is divided into 24 primary time zones, each approximately 15° of longitude wide. Coordinated Universal Time (UTC) is the global standard. Time zones are expressed as UTC offsets (e.g. UTC+5:30 for India). Some countries use half-hour or quarter-hour offsets.
Daylight Saving Time (DST) shifts clocks forward by 1 hour in spring and back in autumn in many countries, adding complexity to conversions. This calculator uses fixed UTC offsets and does not account for DST transitions.
// UTC is the Anchor
UTC (Coordinated Universal Time) replaced GMT as the global standard in 1960. UTC never observes daylight saving — it's a fixed point.
// Half-Hour Offsets
India (UTC+5:30), Iran (UTC+3:30), and Nepal (UTC+5:45) use non-standard offsets — a reminder that time zones aren't always whole hours.
// International Date Line
The 180° meridian roughly defines where one calendar day ends and the next begins. Crossing it going east moves you back one day.
// Meeting Planning
Use the world clocks to find a time that works for multiple participants. 9am New York = 2pm London = 10pm Tokyo.