MDT to CST
+0hMDT
MDTSOURCECST
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
MDT and CST on the World Map
The map below highlights the MDT (Mountain Daylight Time) and CST (Central Standard Time) timezone regions across the globe.
MDT – Mountain Daylight Time
UTC-06:00Mountain Daylight Time (MDT) is the daylight saving offset in the Mountain Time Zone, 6 hours behind UTC.
- •MDT shares the same offset as CST (UTC-06:00).
- •Arizona does not switch to MDT, remaining on MST.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
Everything You Need to Know About MDT and CST Time
MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. CST runs on Central Standard Time (CST) at UTC-06:00. That puts MDT no time difference CST — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in MDT it is 9:00 AM in CST. Midnight in MDT is 12:00 AM in CST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MDT to CST time conversion table
| MDT (MDT) | CST (CST) | Day |
|---|---|---|
| 12:00 AM | 12:00 AM | same day |
| 6:00 AM | 6:00 AM | same day |
| 7:00 AM | 7:00 AM | same day |
| 8:00 AM | 8:00 AM | same day |
| 9:00 AM | 9:00 AM | same day |
| 12:00 PM | 12:00 PM | same day |
| 3:00 PM | 3:00 PM | same day |
| 5:00 PM | 5:00 PM | same day |
| 6:00 PM | 6:00 PM | same day |
| 9:00 PM | 9:00 PM | same day |
Why people convert MDT to CST time
- Scheduling a call from MDT to CST: a 10:00 AM start in MDT lands at 10:00 AM in CST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both MDT and CST are inside the 9-to-5 working day between 9:00 AM and 5:00 PM MDT time (9:00 AM–5:00 PM CST). That is roughly 8 hours of usable overlap.
- Watching a live event or market open: MDT viewers need 9:00 AM in CST to catch a 9:00 AM start there, and 12:00 AM if the event is anchored to MDT.
- Always state the zone abbreviation, not just the hour. "3:00 PM MDT" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM MDT as the recurring meeting window if you work primarily from MDT and need CST colleagues present.
About MDT (Mountain Daylight Time)
Mountain Daylight Time (MDT) is observed during summer months in the Mountain Time Zone, except in Arizona which stays on MST year-round. MDT aligns with Central Standard Time (CST) at UTC-06:00.
About CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
Best time to call between MDT and CST
Both MDT and CST sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM MDT, which is 9:00 AM–5:00 PM CST. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
MDT and CST share 8 hours of working-hours overlap (9:00 AM–5:00 PM MDT), so scheduling a live meeting is straightforward.
MDT is no time difference CST (MDT UTC-06:00 → CST UTC-06:00). The shared working window is 9:00 AM–5:00 PM MDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
MDT
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
CST
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between MDT and CST?
MDT (MDT, UTC-06:00) is no time difference CST (CST, UTC-06:00). The gap is currently +0h.
How do I convert MDT time to CST time?
Add +0h to MDT local time. For example, 9:00 AM in MDT is 9:00 AM in CST.
What time is it in CST right now?
CST uses CST at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +0h offset from MDT.
What is the best time to call CST from MDT?
Call between 9:00 AM and 5:00 PM MDT — that maps to 9:00 AM–5:00 PM CST and keeps both parties inside the working day.
Which is ahead, MDT or CST?
MDT and CST are currently on the same clock.
Does daylight saving time affect the MDT–CST difference?
Neither zone observes daylight saving time, so the +0h offset between MDT and CST is fixed all year.
Which other cities share MDT's time zone?
MDT also covers Denver, Calgary, Edmonton, Salt Lake City, Boise.
Which countries use MDT, MDT's zone?
MDT is used in United States (Mountain), Canada (Alberta).
What is the time difference between MDT and CST?
CST is +0h from MDT.
What timezone is MDT in?
MDT operates on its local timezone.
What timezone is CST in?
CST operates on its local timezone.
Which countries use MDT (Mountain Daylight Time)?
MDT is used in United States (Mountain), Canada (Alberta).
Does MDT observe daylight saving time?
Yes, MDT switches to MST during summer months.
What are some interesting facts about MDT?
MDT shares the same offset as CST (UTC-06:00). Arizona does not switch to MDT, remaining on MST.
Which cities are in the CST timezone?
Major cities in the CST timezone include Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis.
What is the UTC offset for CST?
Central Standard Time (CST) is at UTC-06:00. During daylight saving time, it shifts to CDT.
What should I know about the CST timezone?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
When is it midnight in MDT, what time is it in CST?
When it is 12:00 AM (midnight) in MDT (MDT), it is +0h later in CST (CST).
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See every conversion from MDT →·See every conversion from CST →