Quarter to Twelve

Time in MST and AST

The time difference between Mountain Standard Time (MST) and Atlantic Standard Time (AST) is 3 hours. Atlantic Standard Time is 3 hours ahead of Mountain Standard Time.

Mountain Standard Time

  • The current local time in MST is 6:41 am (May 6, 2024)
  • MST time zone offset is UTC-07:00

Atlantic Standard Time

  • The current local time in AST is 9:41 am (May 6, 2024)
  • AST time zone offset is UTC-04:00

How to convert Mountain Standard Time to Atlantic Standard Time?

Add 3 hours to Mountain Standard Time to get Atlantic Standard Time.

Time in MST

00:00

Time in AST

00:00

Use the slider above to convert Mountain Standard Time to Atlantic Standard Time and view the day and night map at different times.

Day–night colors on the map:
Day colors Day
Civil twilight colors Civil twilight
Nautical twilight colors Nautical twilight
Astronomical twilight colors Astronomical twilight
Night colors Night

Time Conversion Chart

MSTAST
12am3am
1am4am
2am5am
3am6am
4am7am
5am8am
6am9am
7am10am
8am11am
9am12pm
10am1pm
11am2pm
12pm3pm
1pm4pm
2pm5pm
3pm6pm
4pm7pm
5pm8pm
6pm9pm
7pm10pm
8pm11pm
9pm12am
10pm1am
11pm2am