MST to HST

On Monday 5 October 2026, Honolulu is 4 hours behind Denver. Denver is on MDT, and Honolulu is on HST. So 9:00 AM MDT in Denver is 5:00 AM HST in Honolulu.

MST is Mountain Time's winter name. Denver is on MDT until Sunday 1 November 2026.

In Honolulu

5:00 AM

Tuesday 6 October 2026HST

9:00 AM MDT in Denver on Tuesday 6 October 2026 is 5:00 AM HST in Honolulu the same day.

Honolulu is 4 hours behind Denver on this date.

From Sunday 1 November 2026, Honolulu is 3 hours behind Denver.

Hours in Denver and Honolulu

Hours in Denver and Honolulu
DenverHonolulu
6:00 AM MDT2:00 AM HST
9:00 AM MDT5:00 AM HST
12:00 PM MDT8:00 AM HST
3:00 PM MDT11:00 AM HST
6:00 PM MDT2:00 PM HST
9:00 PM MDT5:00 PM HST

Arizona

Arizona stays on MST all year, so it has a table of its own.

Honolulu is 3 hours behind Phoenix.

Phoenix is 1 hour behind Denver until Sunday 1 November 2026.

Hours in Phoenix and Honolulu
PhoenixHonolulu
6:00 AM MST3:00 AM HST
9:00 AM MST6:00 AM HST
12:00 PM MST9:00 AM HST
3:00 PM MST12:00 PM HST
6:00 PM MST3:00 PM HST
9:00 PM MST6:00 PM HST

When the gap changes

On Sunday 1 November 2026, clocks in Denver go back.

From then, Honolulu is 3 hours behind Denver.

On Sunday 14 March 2027, clocks in Denver go forward.

From then, Honolulu is 4 hours behind Denver.

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