1 AM JST to EST
1:00 AM JST is 11:00 AM EST (previous day).
1 AM JST in other time zones
Quarter hours: 1 AM, 1:15, 1:30 and 1:45 JST
- 1:00 AM JST = 11:00 AM EST (previous day)
- 1:15 AM JST = 11:15 AM EST (previous day)
- 1:30 AM JST = 11:30 AM EST (previous day)
- 1:45 AM JST = 11:45 AM EST (previous day)
1 AM JST to EST FAQ
What is 1 AM JST in EST?
1:00 AM JST is 11:00 AM EST (previous day).
Is 1 AM JST the same day in EST?
No. 1:00 AM JST is 11:00 AM EST on the previous day.
What is 1:30 AM JST in EST?
1:30 AM JST = 11:30 AM EST (previous day).
Is 1 AM ET the same as 1 AM EST?
ET (Eastern Time) is the year-round name for these clocks, so 1 AM ET means 1 AM EST on today's date. 1:00 AM JST is 11:00 AM EST (previous day).
Related conversions
All JST to EST times
12 AM JST to EST1 AM JST to EST2 AM JST to EST3 AM JST to EST4 AM JST to EST5 AM JST to EST6 AM JST to EST7 AM JST to EST8 AM JST to EST9 AM JST to EST10 AM JST to EST11 AM JST to EST12 PM JST to EST1 PM JST to EST2 PM JST to EST3 PM JST to EST4 PM JST to EST5 PM JST to EST6 PM JST to EST7 PM JST to EST8 PM JST to EST9 PM JST to EST10 PM JST to EST11 PM JST to EST
Convert EST to JST
Convert JST to other time zones
Convert other time zones to EST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.