What is 12 AM EST in MST?

Is it the same all year?

Yes. 12 AM EST is always 10 PM MST the previous day, because both change their clocks on the same dates.

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

Questions

12 AM EST in other time zones

Time zone	Time
Central Time CST/CDT	11 PM (Tue)
Mountain Time MST/MDT	10 PM (Tue)
Pacific Time PST/PDT	9 PM (Tue)
Alaska Time AKST/AKDT	8 PM (Tue)
Hawaii Time HST	6 PM (Tue)
Greenwich Mean Time GMT	4 AM
Coordinated Universal Time UTC	4 AM
Central European Time CET/CEST	6 AM
Eastern European Time EET/EEST	7 AM
India Standard Time IST	9:30 AM
Japan Standard Time JST	1 PM
Australian Eastern Time AEST/AEDT	3 PM
Singapore Time SGT	12 PM
Philippine Time PHT	12 PM
Moscow Time MSK	7 AM
Gulf Standard Time GST	8 AM

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