New York to MST
-3hNew York
EDTSOURCEMST
MSTGreen rows indicate typical business hours (9 AM - 5 PM)
EDT and MST on the World Map
The map below highlights the EDT (Eastern Standard Time) and MST (Mountain Standard Time) timezone regions across the globe.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
About New York
WikipediaNew York City, the financial capital of the world, operates on Eastern Time (EST/EDT). Home to Wall Street and the NYSE, NYC is crucial for global business coordination.
New York City has more than 800 languages spoken, making it the most linguistically diverse city in the world.
New York vs MST: Offsets, DST and Best Call Times
New York runs on Eastern Daylight Time (EDT) at UTC-04:00, currently observing daylight saving time. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts New York 3 hours behind MST — a difference of -3h at the current offsets.
In practice, when it is 9:00 AM in New York it is 6:00 AM in MST. Midnight in New York is 9:00 PM in MST.New York observes daylight saving time while MST does not, so the gap narrows or widens by an hour part of the year.
New York to MST time conversion table
| New York (EDT) | MST (MST) | Day |
|---|---|---|
| 12:00 AM | 9:00 PM | previous day |
| 6:00 AM | 3:00 AM | same day |
| 7:00 AM | 4:00 AM | same day |
| 8:00 AM | 5:00 AM | same day |
| 9:00 AM | 6:00 AM | same day |
| 12:00 PM | 9:00 AM | same day |
| 3:00 PM | 12:00 PM | same day |
| 5:00 PM | 2:00 PM | same day |
| 6:00 PM | 3:00 PM | same day |
| 9:00 PM | 6:00 PM | same day |
Why people convert New York to MST time
- Scheduling a call from New York to MST: a 10:00 AM start in New York lands at 7:00 AM in MST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both New York and MST are inside the 9-to-5 working day between 12:00 PM and 5:00 PM EDT time (9:00 AM–2:00 PM MST). That is roughly 5 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in New York is 5:00 PM in MST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM EDT" is unambiguous; "3 PM" across a -3h gap is not.
- Block 12:00 PM–5:00 PM EDT as the recurring meeting window if you work primarily from New York and need MST colleagues present.
- New York: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the -3h gap.
About EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
Best time to call between New York and MST
Both New York and MST sit inside the 9 AM – 5 PM working day between 12:00 PM–5:00 PM EDT, which is 9:00 AM–2:00 PM MST. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
New York and MST share 5 hours of working-hours overlap (12:00 PM–5:00 PM EDT), so scheduling a live meeting is straightforward.
New York is 3 hours behind MST (EDT UTC-04:00 → MST UTC-07:00). The shared working window is 12:00 PM–5:00 PM EDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
New York
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
MST
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between New York and MST?
New York (EDT, UTC-04:00) is 3 hours behind MST (MST, UTC-07:00). The gap is currently -3h.
How do I convert New York time to MST time?
Add -3h to New York local time. For example, 9:00 AM in New York is 6:00 AM in MST.
What time is it in MST right now?
MST uses MST at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h offset from New York.
What is the best time to call MST from New York?
Call between 12:00 PM and 5:00 PM EDT — that maps to 9:00 AM–2:00 PM MST and keeps both parties inside the working day.
Which is behind, New York or MST?
New York is 3 hours behind MST. When it is 12:00 PM in New York it is 9:00 AM in MST.
Do New York and MST use different time zones?
New York (USA) uses EDT at UTC-04:00, while MST uses MST at UTC-07:00. The IANA identifiers are America/New_York and America/Denver.
Does daylight saving time affect the New York–MST difference?
Yes at the moment: New York is on daylight saving time and MST is not, so the -3h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share New York's time zone?
EDT also covers New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal and 8 more.
Which countries use EDT, New York's zone?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, Haiti, Bahamas and 4 more.
Is there a day difference between New York and MST?
Not normally. The -3h gap only pushes the date over the previous day.
What is the time difference between New York and MST?
MST is -3h from New York.
What timezone is New York in?
New York City, the financial capital of the world, operates on Eastern Time (EST/EDT). Home to Wall Street and the NYSE, NYC is crucial for global business coordination.
What timezone is MST in?
MST operates on its local timezone.
What are the business hours in New York?
Standard business hours in New York are 9:00 AM - 5:00 PM EST.
Which countries use EST (Eastern Standard Time)?
EST is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, and 6 more countries.
Does EST observe daylight saving time?
Yes, EST switches to EDT during summer months.
What are some interesting facts about EST?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
Which cities are in the MST timezone?
Major cities in the MST timezone include Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson.
What is the UTC offset for MST?
Mountain Standard Time (MST) is at UTC-07:00. During daylight saving time, it shifts to MDT.
What should I know about the MST timezone?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
When is it midnight in New York, what time is it in MST?
When it is 12:00 AM (midnight) in New York (EST), it is -3h later in MST (MST).
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