The World's Timezones,
Instantly Converted

UTC (Coordinated Universal Time) is the global reference for all timezones. Every timezone is expressed as UTC plus or minus an offset — New York is UTC−5 in winter. UTC never changes for daylight saving, making it the reliable backbone of global scheduling.

GMT (Greenwich Mean Time) is the time zone at 0° longitude. UTC replaced GMT as the international standard but they're practically the same offset. The UK uses GMT in winter and BST (UTC+1) in summer.

Most of North America and Europe observe DST. Japan, China, India, most of Africa and Southeast Asia do not. This means offsets between regions shift by one hour twice a year.

Use the Meeting Planner above. Add all participant cities — the Overlap Finder highlights hours where everyone is within business hours (9–17). If no overlap exists, look for early morning in the Americas or late afternoon in Asia-Pacific.

Use the "Share via Email" button in the Meeting Planner — it opens your email app with a pre-filled message showing all timezones and times. You can also copy a plain-text summary to paste into Slack, Teams, or any other tool.