MDT to CDT
+1hMDT
MDTSOURCECDT
CDTGreen rows indicate typical business hours (9 AM - 5 PM)
MDT and CDT on the World Map
The map below highlights the MDT (Mountain Daylight Time) and CDT (Central Daylight 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.
CDT – Central Daylight Time
UTC-05:00Central Daylight Time (CDT) is the daylight saving offset in the Central Time Zone, 5 hours behind UTC.
- •CDT is the same offset as EST (UTC-05:00), which can cause confusion.
- •CDT runs from the second Sunday in March to the first Sunday in November.
Time Conversion Guide: MDT to CDT
MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. CDT runs on Central Daylight Time (CDT) at UTC-05:00. That puts MDT 1 hour ahead of CDT — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in MDT it is 10:00 AM in CDT. Midnight in MDT is 1:00 AM in CDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MDT to CDT time conversion table
| MDT (MDT) | CDT (CDT) | Day |
|---|---|---|
| 12:00 AM | 1:00 AM | same day |
| 6:00 AM | 7:00 AM | same day |
| 7:00 AM | 8:00 AM | same day |
| 8:00 AM | 9:00 AM | same day |
| 9:00 AM | 10:00 AM | same day |
| 12:00 PM | 1:00 PM | same day |
| 3:00 PM | 4:00 PM | same day |
| 5:00 PM | 6:00 PM | same day |
| 6:00 PM | 7:00 PM | same day |
| 9:00 PM | 10:00 PM | same day |
Why people convert MDT to CDT time
- Scheduling a call from MDT to CDT: a 10:00 AM start in MDT lands at 11:00 AM in CDT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both MDT and CDT are inside the 9-to-5 working day between 9:00 AM and 4:00 PM MDT time (10:00 AM–5:00 PM CDT). That is roughly 7 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in MDT is 9:00 PM in CDT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM MDT" is unambiguous; "3 PM" across a +1h gap is not.
- Block 9:00 AM–4:00 PM MDT as the recurring meeting window if you work primarily from MDT and need CDT 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 CDT (Central Daylight Time)
Central Daylight Time (CDT) is observed during summer months in the US and Canadian portions of the Central Time Zone. Clocks are moved forward by one hour, aligning with Eastern Standard Time (EST). Most of Mexico and Central America do not observe CDT, staying on CST year-round.
Best time to call between MDT and CDT
Both MDT and CDT sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM MDT, which is 10:00 AM–5:00 PM CDT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
MDT and CDT share 7 hours of working-hours overlap (9:00 AM–4:00 PM MDT), so scheduling a live meeting is straightforward.
MDT is 1 hour ahead of CDT (MDT UTC-06:00 → CDT UTC-05:00). The shared working window is 9:00 AM–4:00 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
CDT
☀ 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 CDT?
MDT (MDT, UTC-06:00) is 1 hour ahead of CDT (CDT, UTC-05:00). The gap is currently +1h.
How do I convert MDT time to CDT time?
Add +1h to MDT local time. For example, 9:00 AM in MDT is 10:00 AM in CDT.
What time is it in CDT right now?
CDT uses CDT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from MDT.
What is the best time to call CDT from MDT?
Call between 9:00 AM and 4:00 PM MDT — that maps to 10:00 AM–5:00 PM CDT and keeps both parties inside the working day.
Which is ahead, MDT or CDT?
MDT is 1 hour ahead of CDT. When it is 12:00 PM in MDT it is 1:00 PM in CDT.
Does daylight saving time affect the MDT–CDT difference?
Neither zone observes daylight saving time, so the +1h offset between MDT and CDT 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).
Is there a day difference between MDT and CDT?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between MDT and CDT?
CDT is +1h from MDT.
What timezone is MDT in?
MDT operates on its local timezone.
What timezone is CDT in?
CDT 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 CDT timezone?
Major cities in the CDT timezone include Chicago, Houston, Dallas, Austin, Winnipeg, Nashville.
What is the UTC offset for CDT?
Central Daylight Time (CDT) is at UTC-05:00. During daylight saving time, it shifts to CST.
What should I know about the CDT timezone?
CDT is the same offset as EST (UTC-05:00), which can cause confusion. CDT runs from the second Sunday in March to the first Sunday in November.
When is it midnight in MDT, what time is it in CDT?
When it is 12:00 AM (midnight) in MDT (MDT), it is +1h later in CDT (CDT).
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See every conversion from MDT →·See every conversion from CDT →