Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between mst and est?
Mountain Standard Time (mst) is UTC-6 and Eastern Standard Time (est) is UTC-4. The difference between them is 2 hours.
Where is mst used?
Mountain Standard Time (mst) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.
Where is est used?
Eastern Standard Time (est) is used in USA and surrounding regions. The IANA timezone identifier is America/New_York.
How do I convert mst to est?
Use the interactive converter above. Drag the time slider to any mst time and the est equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
MST (Denver) to EST (New York) — exact time difference
MST (Denver) is 2 hours behind EST (New York). Midday in MST (Denver) lines up with 14:00 in EST (New York).
MST (Denver) is in the America/Denver timezone. EST (New York) is in America/New_York. The difference is 2 hours.
Working hours overlap
There is a 6-hour window each day where both MST (Denver) and EST (New York) are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
MST (Denver)
EST (New York)
Overlap (6h)
When to schedule across time zones
Both MST (Denver) and EST (New York) are in standard hours simultaneously for 6h per day. 3 recommended slots shown below.
09:00 Denver / 11:00 New York✓ Both working
10:00 Denver / 12:00 New York✓ Both working
11:00 Denver / 13:00 New York✓ Both working
Based on standard 09:00–17:00 working hours in each location's local time.
Upcoming public holidays
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
MST (Denver)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
EST (New York)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
How to work with MST (Denver) and EST (New York) time zones
Working across MST (Denver) (USA) and EST (New York) (USA) involves a 2-hour gap. The good news: there is a 6-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.
💡 How to schedule across these time zones
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09:00–10:00 in MST (Denver) = 11:00–12:00 in EST (New York). Both sides are in standard business hours during this window.
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10:00–11:00 in MST (Denver) = 12:00–13:00 in EST (New York). Both sides are in standard business hours during this window.
✅
11:00–12:00 in MST (Denver) = 13:00–14:00 in EST (New York). Both sides are in standard business hours during this window.
DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.
Use the time slider above to find the exact equivalent time for any moment in MST (Denver). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.
