MDT to CST Converter & Meeting Planner
Quick answer: 9:00 AM MDT = 9:00 AM CST (fixed -06:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Mountain Daylight Time (MDT) and Central Standard Time (CST)? You need to account for the standard time difference. Central Standard Time is normally 0 hours ahead of Mountain Daylight Time. Whether you are coordinating between teams in Denver and Salt Lake City and Chicago and Dallas, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM MDT = 12:00 AM CST. The full 24-hour MDT to CST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM MDT = 3:00 PM CST.
| MDT Time | CST Time |
|---|---|
| 12:00 AM (00:00) | 12:00 AM (00:00) |
| 1:00 AM (01:00) | 1:00 AM (01:00) |
| 2:00 AM (02:00) | 2:00 AM (02:00) |
| 3:00 AM (03:00) | 3:00 AM (03:00) |
| 4:00 AM (04:00) | 4:00 AM (04:00) |
| 5:00 AM (05:00) | 5:00 AM (05:00) |
| 6:00 AM (06:00) | 6:00 AM (06:00) |
| 7:00 AM (07:00) | 7:00 AM (07:00) |
| 8:00 AM (08:00) | 8:00 AM (08:00) |
| 9:00 AM (09:00) | 9:00 AM (09:00) |
| 10:00 AM (10:00) | 10:00 AM (10:00) |
| 11:00 AM (11:00) | 11:00 AM (11:00) |
| 12:00 PM (12:00) | 12:00 PM (12:00) |
| 1:00 PM (13:00) | 1:00 PM (13:00) |
| 2:00 PM (14:00) | 2:00 PM (14:00) |
| 3:00 PM (15:00) | 3:00 PM (15:00) |
| 4:00 PM (16:00) | 4:00 PM (16:00) |
| 5:00 PM (17:00) | 5:00 PM (17:00) |
| 6:00 PM (18:00) | 6:00 PM (18:00) |
| 7:00 PM (19:00) | 7:00 PM (19:00) |
| 8:00 PM (20:00) | 8:00 PM (20:00) |
| 9:00 PM (21:00) | 9:00 PM (21:00) |
| 10:00 PM (22:00) | 10:00 PM (22:00) |
| 11:00 PM (23:00) | 11:00 PM (23:00) |
Best time to call Chicago from Denver
For most work calls, compare the normal business day in Denver (MDT) with the business day in Chicago (CST). MDT commonly covers North America, while CST is mainly associated with North America, Central America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:00 AM - 4:00 PM MDT, which corresponds to 10:00 AM - 5:00 PM CST. This window sits inside the typical MDT workday (9:00 AM - 5:00 PM) and the CST workday (9:00 AM - 5:00 PM).
- DST Safety: MDT or CST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
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Frequently Asked Questions
What is the time difference between MDT and CST?
During standard time, Central Standard Time is 0 hours ahead of Mountain Daylight Time.
When does MDT start and end?
MDT begins on the second Sunday in March at 02:00 local MST time, when clocks spring forward one hour from MST (UTC-7) to MDT (UTC-6). It ends on the first Sunday in November at 02:00 local MDT time, when clocks fall back to MST. In 2026, MDT runs from March 8 through November 1, covering the majority of the calendar year.
Is Arizona on MDT?
Most of Arizona — including Phoenix and Tucson — does not observe Daylight Saving Time and remains on MST (UTC-7) year-round under a state law in effect since 1968, meaning Arizona does not advance to MDT each March. The significant exception is the Navajo Nation, a sovereign territory spanning parts of northeastern Arizona, southeastern Utah, and northwestern New Mexico, which does observe DST and shifts to MDT on the standard federal schedule.
Is CST the same as Central Time (CT)?
Central Time (CT) is the umbrella term for the zone, while CST and CDT refer to its two seasonal offsets. CST (UTC-6) applies during standard time from November through March, and CDT (UTC-5) applies during Daylight Saving Time from March through November.
Does Mexico City use CST?
Mexico City operates on UTC-6, the same offset as CST, but it does not observe Daylight Saving Time following Mexico's elimination of the practice under a 2022 law. This means Mexico City stays at UTC-6 year-round while US and Canadian Central Time cities shift to UTC-5 each summer.