Time Zone Difference
See the hour difference between two UTC offsets and what time it is in each.
Results
Working with colleagues in another time zone and need to know the gap? Select two UTC offsets and instantly see the hour difference, equivalent noon times and how many business hours overlap. This helps you schedule meetings, calls and handoff windows when teams are spread across the globe.
Explore all our time zone calculator tools, or browse the full time and date converters & calculators.
Frequently asked questions
EST (UTC-5) and GMT (UTC+0) are 5 hours apart. When it is noon EST, it is 5:00 PM GMT. During EDT (UTC-4), the difference is 4 hours.
Japan (JST, UTC+9) is 14 hours ahead of EST (UTC-5) and 17 hours ahead of PST (UTC-8). This means Monday 9:00 AM EST is Monday 11:00 PM JST.
The window where both zones have working hours (9 AM - 5 PM). EST and GMT overlap from 9:00 AM - 12:00 PM EST (2:00 PM - 5:00 PM GMT) giving 3 hours of mutual work time.
Use our Meeting Time Planner tool which supports up to 3 zones and finds the best meeting window where all participants are in business hours.
It can. If only one zone observes DST, the difference shifts by 1 hour. US EST→EDT changes from UTC-5 to UTC-4 in spring, while UK GMT→BST changes from UTC+0 to UTC+1. Select the current offset for accuracy.