Montana, USA
MST
HST
Hawaii Standard Time
GMT -10

Time Difference

MST (Mountain Standard Time) is 3 hours ahead of Hawaii Standard Time
2:30 am02:30 in Great Falls, MT, USA is 11:30 pm23:30 in HST

Great Falls to HST call time
Best time for a conference call or a meeting is between 11am-6pm in Great Falls which corresponds to 8am-3pm in HST

2:30 am02:30 MST (Mountain Standard Time) (Great Falls, MT, USA). Offset UTC -7:00 hours
11:30 pm23:30 Hawaii Standard Time (HST). Offset UTC -10:00 hours

2:30 am02:30 Great Falls, MT, USA / 11:30 pm23:30 HST

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

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

Hawaii Standard Time

Offset: HST is 10 hours behind Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: United States

Principal Cities: The largest city in the HST timezone is Honolulu from USA with population about 371,657 people. Other major cities in the area are Pearl City, Hilo, Kailua, Waipahu

Daylight Saving: Hawaii Standard Time (HST) is not adjusted for daylight saving therefore HST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Hawaii Standard Time remains the same

HST Time Zone Geo Map
HST timezone map

HST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -10 - basic short
  • -1000 - basic
  • -10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -1000 - sign character (-) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates ten hour and zero minutes time differences to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Whiskey - Military abbreviation for HST
  • W - short form of 'Whiskey'
IANA/Olson: Reflects HST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Adak
  • America/Atka
  • HST
  • Pacific/Honolulu
  • Pacific/Johnston
  • US/Aleutian
  • US/Hawaii
Time zones with the GMT -10 offset:
  • HAST - Hawaii-Aleutian Standard Time
  • CKT - Cook Island Time
  • HST - Hawaii Standard Time
  • TAHT - Tahiti Time
  • W - Whiskey Time Zone