Castle Rock to Chicago Time Converter

Updating current time…
Castle Rock
Colorado, USAMDT
UTC−6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Castle Rock'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 29, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 29, 2026

Castle Rock is 1 hour behind Chicago.

How the time difference changes

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

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

Compare Castle Rock 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 Castle Rock, CO, USA is 7:00 am07:00 in Chicago, IL, USA

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

6:00 am06:00 MDT (Mountain Daylight Time) (Castle Rock, CO, 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 Castle Rock, CO, 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
Castle Rock, CO, USAChicago, IL, USA
1:00am
2:00am
3:00am
4:00am
5:00am
6:00am
7:00am
8:00am
9:00am
10:00am
11:00am
12:00pm
1:00pm
2:00pm
3:00pm
4:00pm
5:00pm
6:00pm
7:00pm
8:00pm
9:00pm
10:00pm
11:00pm
12:00am next day
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
00:00 next day

Castle Rock 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

Castle Rock Facts

Country
USA
State
Colorado
Alternative Names
Kasl Rok, Kasul Rok, cheng bao shi, kasl rak klradw, kasl rwk, kyasala raka, Касл Рок, Касъл Рок, كاسل روك, کاسل راک، کلرادو, کیسل راک، کولوراڈو, क्यासल रक, 城堡石
Population
55,591
Currency
Dollar (USD)
Geographic Coordinates
39° 22' N Latitude / 104° 51' W Longitude
International Dialing Code
+1
More About Castle Rock
Castle Rock 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