Big Sky to Chicago Time Converter

Updating current time…
Big Sky
Montana, USAMDT
UTC−6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Big Sky's clocks go back 1 hour on Sun, Nov 1 · MDT → MST
Chicago
Illinois, USACDT
UTC−5
1h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Chicago's clocks go back 1 hour on Sun, Nov 1 · CDT → CST

Quick answers

Selected conversion

6:00 am06:00 MDT (UTC-6), Oct 26, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 26, 2026

Big Sky is 1 hour behind Chicago.

How the time difference changes

Normally, Big Sky is 1 hour behind Chicago. Briefly around seasonal clock changes, Big Sky and Chicago have the same time or Big Sky is 2 hours behind Chicago.

Typically, working hours of 9:00 am to 6:00 pm in Big Sky correspond to 10:00 am to 7:00 pm in Chicago.Typically, working hours of 09:00 to 18:00 in Big Sky correspond to 10:00 to 19:00 in Chicago.

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

Time Difference

MDT (Mountain Daylight Time) is 1 hour behind CDT (Central Daylight Time).
6:00 am06:00 in Big Sky, MT, USA is 7:00 am07:00 in Chicago, IL, USA

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

6:00 am06:00 MDT (Mountain Daylight Time) (Big Sky, MT, USA). Offset UTC -6:00 hours
7:00 am07:00 CDT (Central Daylight Time) (Chicago, IL, USA). Offset UTC -5:00 hours

6:00 am06:00 Big Sky, MT, USA / 7:00 am07:00 Chicago, IL, 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
Big Sky, MT, USAChicago, IL, USA
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Big Sky Time Zone and Facts

Time Zone

Abbreviation / Offset
MDT – Mountain Daylight Time, UTC-6 (now, daylight saving time)
MST – Mountain Standard Time, UTC-7 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 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.
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.
Clock Changes
USA daylight saving time · Clock changes worldwide

Big Sky Facts

Country
USA
State
Montana
Population
2,308
Currency
Dollar (USD)
Geographic Coordinates
45° 17' N Latitude / 111° 22' W Longitude
International Dialing Code
+1
More About Big Sky
Big Sky local time and city facts

Chicago Time Zone and Facts

Time Zone

Abbreviation / Offset
CDT – Central Daylight Time, UTC-5 (now, daylight saving time)
CST – Central Standard Time, UTC-6 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 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.
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.
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