Global Time Zone Directory
Find exact current times, daylight saving rules, and interactive meeting planners for major time zones around the world.
Eastern Standard Time
Observes DST
Pacific Standard Time
Observes DST
Central Standard Time
Observes DST
Greenwich Mean Time
Observes DST
Central European Time
Observes DST
Indian Standard Time
Fixed Offset
Gulf Standard Time
Fixed Offset
Singapore Time
Fixed Offset
Japan Standard Time
Fixed Offset
Australian Eastern Standard Time
Observes DST
Mountain Standard Time
Observes DST
Atlantic Standard Time
Observes DST
Hawaii-Aleutian Standard Time
Observes DST
Eastern European Time
Observes DST
Western European Time
Observes DST
Moscow Standard Time
Fixed Offset
Korea Standard Time
Fixed Offset
Pakistan Standard Time
Fixed Offset
New Zealand Standard Time
Observes DST
Time Zone Guide
How Global Time Zones Actually Work
Every clock on Earth is anchored to a single reference point: UTC — Coordinated Universal Time. UTC itself has no offset; it sits at the prime meridian (0° longitude) and never shifts for daylight saving. All other time zones are expressed as UTC+ or UTC− values, ranging from UTC−12:00 in the far Pacific to UTC+14:00 in parts of Oceania, giving the world a spread of up to 26 hours at any given moment.
That spread has real consequences. A product launch timed for 9 AM in New York lands at 2 PM in London and 10 PM in Tokyo — on the same calendar day. For global businesses, remote engineering teams, and international travelers, knowing where each zone sits relative to UTC is not a trivia exercise; it is operational knowledge. Miscalculating by even one hour can mean a missed video call, a delayed financial transaction, or a flight connection lost to a simple arithmetic error.
Use this directory to look up any major zone's current UTC offset, confirm whether daylight saving is active, and cross-reference local times before scheduling across borders.
Daylight Saving Time
Why Clocks Don't Always Stay Put
Daylight Saving Time (DST) is a seasonal practice where clocks are moved forward by one hour in spring and back again in autumn. The goal is to shift an hour of daylight from the early morning — when most people are asleep — to the evening, reducing artificial lighting demand. Roughly 70 countries observe some form of DST, though transition dates vary: the US and Canada spring forward on the second Sunday of March, while most of Europe does so on the last Sunday.
The remaining countries — including China, India, Japan, and most of Africa — operate on a fixed UTC offset year-round. This divergence creates a scheduling headache that many people underestimate. A standing weekly call between New York and London shifts by one hour for approximately three weeks every March and October, because the two regions don't change their clocks on the same date. Always verify the current UTC offset for any zone before booking time-sensitive meetings — the standard offset listed on a time zone page may not reflect what is active today.
Common Questions
Frequently Asked Questions
- What is the difference between UTC and GMT?
- UTC (Coordinated Universal Time) and GMT (Greenwich Mean Time) share the same numerical offset — both sit at ±0 — so they display identical times in practice. The key difference is definitional: GMT is a time zone rooted in the Earth's rotation relative to the prime meridian, while UTC is an atomic-clock standard maintained by the International Bureau of Weights and Measures. Modern timekeeping infrastructure — servers, GPS, aviation — uses UTC because atomic clocks are more precise than astronomical observation.
- Which country has the most time zones?
- France holds the record, spanning 12 time zones when its overseas territories are counted — from French Polynesia in the Pacific (UTC−10) to Wallis and Futuna (UTC+12). Among countries measured by their main landmass alone, Russia covers 11 time zones, stretching from UTC+2 in Kaliningrad to UTC+12 in Kamchatka, making it the widest single contiguous territory by time zone count.
- How do I convert between two time zones without making errors?
- The safest method is to convert both times to UTC first, then to your target zone — this eliminates ambiguity around DST transitions. For example, to find what 3 PM Eastern Time (UTC−5) is in India Standard Time (UTC+5:30), add 5 hours to get UTC (8 PM), then add 5 hours 30 minutes to get IST (1:30 AM the next day). Pay special attention to DST windows, which can shift a zone's UTC offset by one hour and catch even experienced schedulers off-guard.