Chicago to Great Falls Time Converter

Updating current time…
Chicago
Illinois, USACST
UTC−6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Great Falls
Montana, USAMST
UTC−7
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

6:00 am06:00 CST (UTC-6), Nov 15, 2026 = 5:00 am05:00 MST (UTC-7), Nov 15, 2026

Chicago is 1 hour ahead of Great Falls.

How the time difference changes

Normally, Chicago is 1 hour ahead of Great Falls. Briefly around seasonal clock changes, Chicago is 2 hours ahead of Great Falls or Chicago and Great Falls have the same time.

Typically, working hours of 9:00 am to 6:00 pm in Chicago correspond to 8:00 am to 5:00 pm in Great Falls.Typically, working hours of 09:00 to 18:00 in Chicago correspond to 08:00 to 17:00 in Great Falls.

Compare Chicago time with Great Falls time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

CST (Central Standard Time) is 1 hour ahead of MST (Mountain Standard Time).
6:00 am06:00 in Chicago, IL, USA is 5:00 am05:00 in Great Falls, MT, USA

Chicago to Great Falls call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in Chicago which corresponds to 9am-5pm09:00-17:00 in Great Falls.

6:00 am06:00 CST (Central Standard Time) (Chicago, IL, USA). Offset UTC -6:00 hours
5:00 am05:00 MST (Mountain Standard Time) (Great Falls, MT, USA). Offset UTC -7:00 hours

6:00 am06:00 Chicago, IL, USA / 5:00 am05:00 Great Falls, MT, USA

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
Chicago, IL, USAGreat Falls, MT, USA
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Chicago Time Zone and Facts

Time Zone

Abbreviation / Offset
CST – Central Standard Time, UTC-6 (now)
CDT – Central Daylight Time, UTC-5 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (CDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (CST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Chicago Facts

Country
USA
State
Illinois
Alternative Names
CHI, Cekaga, Chi-ka-ko, Chi-kâ-kô, Chicago, Chicagu, Chikago, Chykaga, Cikaga, Cikago, Cikaqo, E-Chicago, Kikako, Shikago, Sicagum, Sikago, The Windy City, Tsikago, Windy City, chikhako, cikago, cikako, shikago, shkagw, shykaghw, shykagw, shykajw, shyqgw, sikago, sikkagea, syqgw, zhi jia ge, Çikago, Çikaqo, Ĉikago, Čikaga, Čikago, Čikāga, Čėkaga, Şikago, Σικάγο, Чикаго, Чикаґо, Чыкага, Չիկագո, שיקאגא, שיקגו, شيكاجو, شيكاغو, شکاگو, شیکاگو, شیکاگۆ, ܫܝܩܓܘ, शिकागो, শিকাগো, ਸ਼ਿਕਾਗੋ, சிகாகோ, చికాగో, ಶಿಕಾಗೊ, ഷിക്കാഗോ, ชิคาโก, ရှီကာဂိုမြို့, ჩიკაგო, ሺካጎ, ᓰᖄᑯ, Ṣìkágò, シカゴ, 芝加哥, 시카고, 𐍃𐌾𐌹𐌺𐌰𐌲𐍉
Population
2,664,452
Currency
Dollar (USD)
Geographic Coordinates
41° 51' N Latitude / 87° 39' W Longitude
International Dialing Code
+1
More About Chicago
Chicago time now

Great Falls Time Zone and Facts

Time Zone

Abbreviation / Offset
MST – Mountain Standard Time, UTC-7 (now)
MDT – Mountain Daylight Time, UTC-6 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (MDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (MST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

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
More About Great Falls
Great Falls local time and city facts