Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between mst and cdt?
Mountain Standard Time (mst) is UTC-6 and Central Daylight Time (cdt) is UTC-5. The difference between them is 1 hours.
Where is mst used?
Mountain Standard Time (mst) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.
Where is cdt used?
Central Daylight Time (cdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago.
How do I convert mst to cdt?
Use the interactive converter above. Drag the time slider to any mst time and the cdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
MST (Denver) is 1 hour behind CDT (Chicago). At noon in MST (Denver), your contact in CDT (Chicago) sees 13:00.
MST (Denver) observes America/Denver and CDT (Chicago) observes America/Chicago — a 1 hour gap between them.
Daily overlap window
MST (Denver) and CDT (Chicago) 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
MST (Denver)
CDT (Chicago)
Overlap (7h)
Meeting time recommendations
MST (Denver) and CDT (Chicago) share 7 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.
09:00 Denver / 10:00 Chicago✓ Both working
10:00 Denver / 11:00 Chicago✓ Both working
11:00 Denver / 12:00 Chicago✓ Both working
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Public holidays for both locations
⚡ Holiday alerts for both locations, double-check schedules before confirming.
MST (Denver)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
CDT (Chicago)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Scheduling between MST (Denver) and CDT (Chicago)
Teams in MST (Denver) (USA) and CDT (Chicago) (USA) face a 1-hour time difference day to day. A 7-hour shared business hours window makes real-time meetings feasible for both sides within their normal working day.
💡 Scheduling tips for these locations
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Schedule at 09:00–10:00 (MST (Denver)) for a 10:00–11:00 slot in CDT (Chicago) — the sweet spot where both teams are working.
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Schedule at 10:00–11:00 (MST (Denver)) for a 11:00–12:00 slot in CDT (Chicago) — the sweet spot where both teams are working.
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Schedule at 11:00–12:00 (MST (Denver)) for a 12:00–13:00 slot in CDT (Chicago) — the sweet spot where both teams are working.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any MST (Denver) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
