Central Standard Time (cst) is used in USA. The IANA timezone identifier is America/Chicago.

Mountain Daylight Time (mdt) is used in USA. The IANA timezone identifier is America/Denver.

CST to MDT Time Converter

Central Standard Time → Mountain Daylight Time

CST = UTC-5MDT = UTC-6

⚠️ CST is ambiguous — on this page it means Central Standard Time. It also refers to:

China Standard Time (Beijing) → MDT ↗Cuba Standard Time (Havana) → MDT ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

MDT (Denver)

USA · -1h🔔 Public Holiday in 7d — Juneteenth National Independence Day

08:00

London

United Kingdom · +6h

15:00

New York

USA · +1h

10:00

Tokyo

Japan · +14h

23:00

Dubai

United Arab Emirates · +9h

18:00

CST (Chicago) to MDT (Denver) — exact time difference

CST (Chicago) is 1 hour ahead of MDT (Denver). At noon in CST (Chicago), your contact in MDT (Denver) sees 11:00.

CST (Chicago) is in the America/Chicago timezone. MDT (Denver) is in America/Denver. The difference is 1 hour.

Working hours overlap

CST (Chicago) and MDT (Denver) share 7 hours of overlapping business hours daily — enough for real-time collaboration without anyone joining at odd hours.

00:0006:0012:0018:0024:00

CST (Chicago)

MDT (Denver)

Overlap (7h)

Recommended meeting windows

Both CST (Chicago) and MDT (Denver) are in standard hours simultaneously for 7h per day. 3 recommended slots shown below.

10:00 Chicago / 09:00 Denver✓ Both working

11:00 Chicago / 10:00 Denver✓ Both working

12:00 Chicago / 11:00 Denver✓ Both working

Based on standard 09:00–17:00 working hours in each location's local time.

Public holidays for both locations

⚡ Holiday alerts for both locations, double-check schedules before confirming.

CST (Chicago)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

MDT (Denver)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

Scheduling between CST (Chicago) and MDT (Denver)

CST (Chicago) (USA) leads MDT (Denver) (USA) by 1 hours. Despite the gap, a 7-hour window of shared business hours each day keeps real-time collaboration practical for both sides.

💡 Scheduling tips for these locations

✅

10:00–11:00 in CST (Chicago) = 09:00–10:00 in MDT (Denver). Both sides are in standard business hours during this window.

✅

11:00–12:00 in CST (Chicago) = 10:00–11:00 in MDT (Denver). Both sides are in standard business hours during this window.

✅

12:00–13:00 in CST (Chicago) = 11:00–12:00 in MDT (Denver). Both sides are in standard business hours during this window.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in CST (Chicago). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

CST (Chicago) ↔ MDT (Denver)

7h of business hours overlap daily (09:00–17:00)

CST (Chicago)

MDT (Denver)

00:00

23:00-1d

01:00

00:00

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09:00Working

08:00off

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11:00Working

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Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between cst and mdt?

Central Standard Time (cst) is UTC-5 and Mountain Daylight Time (mdt) is UTC-6. The difference between them is 1 hours.

Where is cst used?

Central Standard Time (cst) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago. Note: cst is ambiguous and may refer to other timezones.

Where is mdt used?

Mountain Daylight Time (mdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.

How do I convert cst to mdt?

Use the interactive converter above. Drag the time slider to any cst time and the mdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular CST conversions

CST → London CST → New York CST → Tokyo CST → Dubai CST → Sydney CST → Paris CST → Berlin CST → Singapore CST → Los Angeles CST → Toronto

Popular MDT conversions

London → MDT New York → MDT Tokyo → MDT Dubai → MDT Sydney → MDT Paris → MDT Berlin → MDT Singapore → MDT Los Angeles → MDT Toronto → MDT