HST to MDT Time Converter
Hawaii Standard Time → Mountain Daylight Time
HST
UTC-10
Hawaii Standard Time
MDT
UTC-6
Mountain Daylight Time
Hawaii Standard Time (HST) is 4 hours ahead Mountain Daylight Time (MDT). When it is noon in HST, it is 4 PM in MDT. This offset is fixed year-round.
All 24 Hours — HST to MDT
Click any row to see the full detail page. Current hour in HST is highlighted.
Best Meeting Times — HST & MDT
Recommended windows where both HST and MDT participants are within working hours (8 AM–6 PM).
Tip: When scheduling between HST and MDT, aim for the “Best” windows above. These times keep both parties within normal working hours, avoiding early-morning or late-evening fatigue.
Related Time Zone Conversions
Frequently Asked Questions — HST to MDT
Hawaii Standard Time (HST) is 4 hours ahead of Mountain Daylight Time (MDT). HST is UTC-10 and MDT is UTC-6.
Live Now
HST
UTC-10
01:12:24
Saturday
MDT
UTC-6
05:12:24
Saturday
Right now, 1 AM HST = 5 AM MDT
Business Hours Quick Jump
Reverse Conversion
MDT to HST
Mountain Daylight Time → Hawaii Standard Time
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