Montana, USA
MST
CHAST
Chatham Island Standard Time
GMT +12:45

Time Difference

MST (Mountain Standard Time) is 19 hours and 45 minutes behind Chatham Island Standard Time
5:30 am05:30 in Great Falls, MT, USA is 1:15 am01:15 in CHAST

Great Falls to CHAST call time
Best time for a conference call or a meeting is between 3am-5am in Great Falls which corresponds to 10:45pm-12:45pm in CHAST

5:30 am05:30 MST (Mountain Standard Time) (Great Falls, MT, USA). Offset UTC -7:00 hours
1:15 am01:15 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours

5:30 am05:30 Great Falls, MT, USA / 1:15 am01:15 CHAST

Great Falls, MT, USA CHAST
12am (midnight) 7:45 pm
1am 8:45 pm
2am 9:45 pm
3am 10:45 pm
4am 11:45 pm
5am 12:45 am
6am 1:45 am
7am 2:45 am
8am 3:45 am
9am 4:45 am
10am 5:45 am
11am 6:45 am
12pm (noon) 7:45 am
1pm 8:45 am
2pm 9:45 am
3pm 10:45 am
4pm 11:45 am
5pm 12:45 pm
6pm 1:45 pm
7pm 2:45 pm
8pm 3:45 pm
9pm 4:45 pm
10pm 5:45 pm
11pm 6:45 pm
0:00 19:45
1:00 20:45
2:00 21:45
3:00 22:45
4:00 23:45
5:00 0:45
6:00 1:45
7:00 2:45
8:00 3:45
9:00 4:45
10:00 5:45
11:00 6:45
12:00 7:45
13:00 8:45
14:00 9:45
15:00 10:45
16:00 11:45
17:00 12:45
18:00 13:45
19:00 14:45
20:00 15:45
21:00 16:45
22:00 17:45
23:00 18:45

Great Falls Information

Time Zone

Abbreviation / Name
MST - Mountain Standard Time
HAR - Heure Avancée des Rocheuses
UTC / GMT Offset
-7:00 hours during Mountain Standard Time, currently in use.
-6:00 hours during Heure Avancée des Rocheuses.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3am Sunday, March 10, 2024 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 1 hour to Sunday, March 10, 2024, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1am Sunday, November 3, 2024 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 1 hour to Sunday, November 3, 2024, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Great Falls Facts

Country
USA
State
Montana
Alternative Names
Electric City, GTF, Great Falls, Grejt Fols, Grejt-Fols, Grit Fouls, da pu bu cheng, ghryt fwlz mwntana, guretoforuzu, Грейт Фолс, Грейт-Фолс, Грејт Фолс, Грит Фоулс, غريت فولز، مونتانا, グレートフォールズ, 大瀑布城
Population
59,638
Currency
Dollar (USD)
Geographic Coordinates
47° 30' N Latitude / 111° 18' W Longitude
International Dialing Code
+1

Chatham Island Standard Time

Offset: CHAST is 12 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific

CHAST Time Zone Geo Map
CHAST timezone map

CHAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1245 - basic
  • +12:45 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1245 - sign character (+) followed by a four digit time providing hours (12) and minutes (45) of the offset. Indicates twelve hour and forty-five minutes time differences to the east of the zero meridian.