ADT to MDT

Atlantic Daylight Time

Wed Jul, 01, 2026
2:51 PM

Atlantic Daylight Time (ADT)

ADT is 3 hours behind Universal Time (UTC-3)

Mountain Daylight Time

Wed Jul, 01, 2026
11:51 AM

Mountain Daylight Time (MDT)

MDT is 6 hours behind Universal Time (UTC-6)

ADT to MDT Time Conversion

When it is 12:00 PM in ADT, it is 9:00 AM in MDT.

📞The best time to schedule a call is between 12 PM and 5 PM in ADT, which is between 9 AM and 2 PM in MDT.

Time difference between ADT and MDT

ADT is 3 hours ahead of MDT.

🕐 Subtract 3 hours from ADT time to get MDT time.

ADT uses 3 hours behind Universal Time (UTC-3) and MDT uses 6 hours behind Universal Time (UTC-6).

ADT to MDT time conversion chart (24 hours)

Highlighted rows are overlapping 9-to-5 business hours – the best time to schedule a call between ADT and MDT.
ADT Time MDT Time
12 AM ADT Time 9 PM MDT Time
1 AM ADT Time 10 PM MDT Time
2 AM ADT Time 11 PM MDT Time
3 AM ADT Time 12 AM MDT Time
4 AM ADT Time 1 AM MDT Time
5 AM ADT Time 2 AM MDT Time
6 AM ADT Time 3 AM MDT Time
7 AM ADT Time 4 AM MDT Time
8 AM ADT Time 5 AM MDT Time
9 AM ADT Time 6 AM MDT Time
10 AM ADT Time 7 AM MDT Time
11 AM ADT Time 8 AM MDT Time
ADT Time MDT Time
12 PM ADT Time 9 AM MDT Time
1 PM ADT Time 10 AM MDT Time
2 PM ADT Time 11 AM MDT Time
3 PM ADT Time 12 PM MDT Time
4 PM ADT Time 1 PM MDT Time
5 PM ADT Time 2 PM MDT Time
6 PM ADT Time 3 PM MDT Time
7 PM ADT Time 4 PM MDT Time
8 PM ADT Time 5 PM MDT Time
9 PM ADT Time 6 PM MDT Time
10 PM ADT Time 7 PM MDT Time
11 PM ADT Time 8 PM MDT Time

ADT to MDT - Frequently Asked Questions

Q

What is the time difference between ADT and MDT?

A

ADT is 3 hours ahead of MDT.

Q

Is ADT ahead of or behind MDT?

A

ADT is ahead of MDT by 3 hours.

Q

When it is 9:00 AM in ADT, what time is it in MDT?

A

It is 6:00 AM in MDT.