Time in AMST and AST
The time difference between Amazon Summer Time (AMST) and Atlantic Standard Time (AST) is 1 hour. Atlantic Standard Time is 1 hour behind Amazon Summer Time.
This means 9am AMST is 8am AST and 5pm AMST is 4pm AST.
Amazon Summer Time
- The current local time in AMST is 11:02 pm (July 18, 2026)
- AMST time zone offset is UTC-03:00
Atlantic Standard Time
- The current local time in AST is 12:02 am (July 19, 2026)
- AST time zone offset is UTC-04:00
How to convert Amazon Summer Time to Atlantic Standard Time?
Subtract 1 hour from Amazon Summer Time to get Atlantic Standard Time.
Time in AMST
00:00
Time in AST
00:00
Use the slider above to convert Amazon Summer Time to Atlantic Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| AMST | AST |
|---|---|
| 12am | 11pm |
| 1am | 12am |
| 2am | 1am |
| 3am | 2am |
| 4am | 3am |
| 5am | 4am |
| 6am | 5am |
| 7am | 6am |
| 8am | 7am |
| 9am | 8am |
| 10am | 9am |
| 11am | 10am |
| 12pm | 11am |
| 1pm | 12pm |
| 2pm | 1pm |
| 3pm | 2pm |
| 4pm | 3pm |
| 5pm | 4pm |
| 6pm | 5pm |
| 7pm | 6pm |
| 8pm | 7pm |
| 9pm | 8pm |
| 10pm | 9pm |
| 11pm | 10pm |