Add 8 hours. That is the conversion from EST to MSK, and it is always correct for the abbreviation. Eastern Standard Time sits at UTC−5. Moscow Time sits at UTC+3. The gap is 8 hours. 09:00 EST is 17:00 MSK. Every time.
The catch? New York is not on EST right now. It is on EDT. That shrinks the live gap to 7 hours. Use “EST” in July and you will show up an hour late.
The fast answer: add 8 hours to EST, 7 hours to EDT
EST (UTC−5) to MSK (UTC+3) is a fixed 8-hour gap. The abbreviation math never changes.
But the clocks in New York change twice a year. Moscow’s clocks do not. From the second Sunday of March to the first Sunday of November, the US East Coast runs on Eastern Daylight Time (EDT, UTC−4). During those months, add 7 hours. 09:00 EDT is 16:00 MSK. Before you convert, check which offset is live.
Why the EST to MSK gap flips between 7 and 8 hours
Moscow Time stays locked. Russia abandoned seasonal clock changes in 2014. Eastern Time does not stay locked. It springs forward to EDT and falls back to EST.
In 2026, the US springs forward on 8 March and falls back on 1 November. From 1 January to 7 March, MSK runs 8 hours ahead of EST. From 8 March to 31 October, MSK runs 7 hours ahead of EDT. On 1 November, the gap returns to 8 hours.
In 2027, the spring shift lands on 14 March and the fall shift on 7 November. The pattern repeats: 8 hours in winter, 7 hours in summer.
When the EST to MSK gap kills your working day
Book a 09:00 New York call in January. Moscow is already at 17:00. The 8-hour winter gap leaves zero overlap in a standard 09:00 to 17:00 working day. Someone starts early or stays late.
Book that same 09:00 call in July. Moscow is at 16:00. The 7-hour summer gap gives you one hour of overlap: 09:00 to 10:00 Eastern time. That is your window. Use it.
Check which offset is live before you send the invite.
How to convert Moscow time back to Eastern Time
Subtract 8 hours from MSK to get EST in winter. Subtract 7 hours to get EDT in summer. 18:00 MSK is 10:00 EST from November to mid-March, and 11:00 EDT from mid-March to early November. Confirm which Eastern offset is active first.
Is Moscow Time ever 8 hours ahead of New York in summer?
No. From the second Sunday of March to the first Sunday of November, Moscow is exactly 7 hours ahead of New York. The 8-hour gap applies only during winter months when New York runs on EST.
Does Moscow Time change its clocks?
No. Moscow Time (MSK) is fixed year-round at UTC+3. It has not observed daylight saving time since 2014.
Does “EST” ever mean the current time in New York?
Only during winter. EST (UTC−5) is the standard time label, active from early November to mid-March. Use “ET” (Eastern Time) to refer to the local time in New York year-round. ET switches between EST and EDT.
If I see “09:00 EST,” what time is that in Moscow?
17:00 MSK. This is correct only if the date falls between early November and mid-March. If the date is in summer, the event is almost certainly on EDT, and 09:00 EDT is 16:00 MSK. Check the calendar before you dial.
What is the current time in New York and Moscow?
See the live clock at Eastern Standard Time and the daylight time variant at EDT Time Now, Current Eastern Daylight Time.