Time Difference Between Mountain Time and United States
As of 31 August 2026, United States is 2 hours ahead of Mountain Time. This difference is fixed: neither zone shifts its clocks against the other, so it holds all year.
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Mountain Time, United States
16:34
Mon, Aug 31, 2026
UTC-6 · MDT · America/Denver
New York, United States
+2h18:34
Mon, Aug 31, 2026
UTC-4 · EDT · America/New_York
United States is 2 hours ahead of Mountain Time.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Mountain Time | Monday, August 31, 2026 | MDTAmerica/Denver | UTC-6 | Active now |
| United States | Monday, August 31, 2026 | EDTAmerica/New_York | UTC-4 | Active now |
Mountain Time: Covers Denver and most of the Rocky Mountain states. Switches between MST (UTC-7) and MDT (UTC-6) with daylight saving — unlike Arizona, which stays on MST year-round.
United States: The United States spans six main time zones. This page uses Eastern Time; Pacific Time is 3 hours behind it.
Hour by hour: Mountain Time to United States
Every hour of today in Mountain Time and what it is in United States. Highlighted rows fall inside United States working hours (09:00–18:00).
| Mountain Time | United States |
|---|---|
| 00:00 | 02:00 |
| 01:00 | 03:00 |
| 02:00 | 04:00 |
| 03:00 | 05:00 |
| 04:00 | 06:00 |
| 05:00 | 07:00 |
| 06:00 | 08:00 |
| 07:00 | 09:00 |
| 08:00 | 10:00 |
| 09:00 | 11:00 |
| 10:00 | 12:00 |
| 11:00 | 13:00 |
| Mountain Time | United States |
|---|---|
| 12:00 | 14:00 |
| 13:00 | 15:00 |
| 14:00 | 16:00 |
| 15:00 | 17:00 |
| 16:00 | 18:00 |
| 17:00 | 19:00 |
| 18:00 | 20:00 |
| 19:00 | 21:00 |
| 20:00 | 22:00 |
| 21:00 | 23:00 |
| 22:00 | 00:00next day |
| 23:00 | 01:00next day |
Best time to call or meet
Overlapping working hours
09:00–16:00 in Mountain Time (11:00–18:00 in United States)
Both places are inside 09:00–18:00 for 7 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
08:00–19:00 in Mountain Time (10:00–21:00 in United States)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
United States puts its clocks back on Sunday, November 1, 2026
The local offset moves from UTC-4 to UTC-5. After that date, United States is 1 hour ahead of Mountain Time — instead of 2 hours ahead, as it is today.
Mountain Time puts its clocks back on Sunday, November 1, 2026
The local offset moves from UTC-6 to UTC-7. The gap between Mountain Time and United States stays at 2 hours because both places change at the same time.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Mountain Time and United States: common questions
What is the time difference between Mountain Time and United States?
United States is 2 hours ahead of Mountain Time, and this does not change during the year because the difference between these two zones is fixed.
When it is 9:00 AM in Mountain Time, what time is it in United States?
It is 11:00 AM in New York, United States. Use the time field in the calculator above to check any other hour.
Is United States ahead of or behind Mountain Time?
United States is ahead of Mountain Time by 2 hours at the moment. In practical terms, the working day in United States starts and ends earlier in Mountain Time terms.
Do Mountain Time and United States observe daylight saving time?
Both Mountain Time and United States change their clocks, but not on the same dates. That is why the gap is not fixed: across the year, United States ranges from 2 hours ahead to 2 hours ahead relative to Mountain Time.
What is the best time to call United States from Mountain Time?
Working hours overlap between 09:00 and 16:00 Mountain Time time, which is 11:00 to 18:00 in United States. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Mountain Time, United States (UTC-6) and New York, United States (UTC-4) were generated on Monday, August 31, 2026 UTC and refresh in your browser.