How many time zones are there in the world?

There are 24 standard time zones, but in practice over 38 are used because some countries use 30- or 45-minute offsets from UTC. The UTC offset ranges from UTC-12:00 (Baker Island) to UTC+14:00 (Line Islands, Kiribati).

What is UTC and how does it differ from GMT?

UTC (Coordinated Universal Time) is the primary world time standard. GMT (Greenwich Mean Time) is the time at the Prime Meridian (0 degrees longitude). They are numerically the same but UTC is the official scientific standard with atomic clock precision. GMT is used informally; UTC is the technical standard for timekeeping.

How do I convert EST to PST?

EST (Eastern Standard Time) is UTC-5. PST (Pacific Standard Time) is UTC-8. PST is 3 hours behind EST. During daylight saving time (EDT vs PDT), both shift by 1 hour so the difference remains 3 hours. Example: 2:00 PM EST = 11:00 AM PST.

Which countries do not observe daylight saving time?

Most of Asia, Africa, and South America do not observe DST. Within the US, Arizona (except Navajo Nation) and Hawaii do not observe DST. Japan, China, India, and most equatorial countries have abolished or never adopted DST. The EU voted to abolish DST but implementation varies by member state.

Time Zone Converter

From Time Zone

To Time Zone

Date & Time

About the Time Zone Converter

Select a source time zone, a destination time zone, and a date/time to instantly convert between any two of the world's time zones. Daylight Saving Time is automatically applied.

Supported time zones include:

All US time zones (ET, CT, MT, PT, AK, HI)
European zones (London GMT/BST, Paris/Berlin CET/CEST, Moscow MSK)
Asian zones (IST, JST, CST, SGT, GST)
Pacific and Oceania zones (AEST, NZST)
UTC as reference

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Time Zone Converter

About the Time Zone Converter

Supported time zones include:

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