What is 1 AM GMT in EST?

Does the answer change during the year?

Yes. Greenwich Mean Time and Eastern Time don't change their clocks on the same dates, so over the next 12 months:

• October 14 to October 31: 1 AM GMT = 9 PM EST the previous day
• November 1 to March 13: 1 AM GMT = 8 PM EST the previous day
• March 14 to October 13: 1 AM GMT = 9 PM EST the previous day

Eastern Time switches between EST and EDT for daylight saving time; people often say EST all year.

Questions

1 AM GMT in other time zones

Time zone	Time
Eastern Time EST/EDT	9 PM (Tue)
Central Time CST/CDT	8 PM (Tue)
Mountain Time MST/MDT	7 PM (Tue)
Pacific Time PST/PDT	6 PM (Tue)
Alaska Time AKST/AKDT	5 PM (Tue)
Hawaii Time HST	3 PM (Tue)
Coordinated Universal Time UTC	1 AM
Central European Time CET/CEST	3 AM
Eastern European Time EET/EEST	4 AM
India Standard Time IST	6:30 AM
Japan Standard Time JST	10 AM
Australian Eastern Time AEST/AEDT	12 PM
Singapore Time SGT	9 AM
Philippine Time PHT	9 AM
Moscow Time MSK	4 AM
Gulf Standard Time GST	5 AM

Based on the clocks on Wednesday, October 14, 2026.