What is 4 AM JST in EST?

Does the answer change during the year?

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

• October 14 to October 31: 4 AM JST = 3 PM EST the previous day
• November 1 to March 13: 4 AM JST = 2 PM EST the previous day
• March 14 to October 13: 4 AM JST = 3 PM EST the previous day

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

Questions

4 AM JST in other time zones

Time zone	Time
Eastern Time EST/EDT	3 PM (Wed)
Central Time CST/CDT	2 PM (Wed)
Mountain Time MST/MDT	1 PM (Wed)
Pacific Time PST/PDT	12 PM (Wed)
Alaska Time AKST/AKDT	11 AM (Wed)
Hawaii Time HST	9 AM (Wed)
Greenwich Mean Time GMT	7 PM (Wed)
Coordinated Universal Time UTC	7 PM (Wed)
Central European Time CET/CEST	9 PM (Wed)
Eastern European Time EET/EEST	10 PM (Wed)
India Standard Time IST	12:30 AM
Australian Eastern Time AEST/AEDT	6 AM
Singapore Time SGT	3 AM
Philippine Time PHT	3 AM
Moscow Time MSK	10 PM (Wed)
Gulf Standard Time GST	11 PM (Wed)

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