12 AM HST to MDT
Hawaii Standard Time → Mountain Daylight Time
Outside business hours
HST
12 AM
UTC-10
=
MDT
4 AM
UTC-6
12 AM HST (Hawaii Standard Time) equals 4 AM MDT (Mountain Daylight Time). This falls outside typical business hours for one or both regions.
Live — HST
02:29:25
Saturday, March 21
UTC-10
Live — MDT
06:29:25
Saturday, March 21
UTC-6
DST activeMDT
- Full name
- Mountain Daylight Time
- UTC offset
- UTC-6
- DST
- Not observed
- Region
- North America
24-Hour Comparison — HST to MDT
Click any row to jump to that hour's page.
12 AM6 AM12 PM6 PM11 PM
HSTMDTDayMeeting
12 AMthis
4 AM
–
Off hours
1 AM
5 AM
–
Off hours
2 AM
6 AM
–
Off hours
3 AM
7 AM
–
Off hours
4 AM
8 AM
–
Early/Late
5 AM
9 AM
–
Early/Late
6 AM
10 AM
–
Early/Late
7 AM
11 AM
–
Early/Late
8 AM
12 PM
–
Good
9 AM
1 PM
–
Good
10 AM
2 PM
–
Good
11 AM
3 PM
–
Good
12 PM
4 PM
–
Good
1 PM
5 PM
–
Good
2 PM
6 PM
–
Good
3 PM
7 PM
–
Early/Late
4 PM
8 PM
–
Early/Late
5 PM
9 PM
–
Early/Late
6 PM
10 PM
–
Early/Late
7 PM
11 PM
–
Off hours
8 PM
12 AM
+1d
Off hours
9 PM
1 AM
+1d
Off hours
10 PM
2 AM
+1d
Off hours
11 PM
3 AM
+1d
Off hours
Green = business hours overlap · Amber = partial · Red = off hours
All Hours — HST to MDT
Hub page →HST ↔ MDT Overview
Full 24-hour chart, live clocks, FAQ