Time Difference Between New York and Tokyo

Tokyo is 13 hours ahead of New York in summer and 14 hours ahead in winter. For most of the working day, they are on entirely different calendar dates.

At a glance — New York winter (EST, November to mid-March)

New York (EST, UTC−5) Tokyo (JST, UTC+9)
6 AM8 PM (same day)
8 AM10 PM (same day)
10 AM12 AM midnight (next day)
12 PM (noon)2 AM (next day)
3 PM5 AM (next day)
5 PM7 AM (next day)
8 PM10 AM (next day)

At a glance — New York summer (EDT, mid-March to November)

New York (EDT, UTC−4) Tokyo (JST, UTC+9)
6 AM7 PM (same day)
8 AM9 PM (same day)
10 AM11 PM (same day)
12 PM (noon)1 AM (next day)
3 PM4 AM (next day)
5 PM6 AM (next day)
8 PM9 AM (next day)

Tokyo is always UTC+9 and never changes. The gap shifts from 13 to 14 hours when New York moves from EDT to EST in autumn. Use the Time Zone Converter for a precise answer on any specific date.

Why Tokyo never changes its clocks

Japan experimented with daylight saving time briefly after World War II, under direction from the US occupation, but abolished it in 1951. Public support for reintroducing it has consistently been low — concerns include disrupted sleep patterns, increased energy costs (Japan's humid summers mean air conditioning demand actually rises with longer daylight hours), and the disruption to daily life. The idea was considered again ahead of the Tokyo 2020 Olympics but was ultimately rejected. Japan stays firmly at UTC+9 year-round.

This means the gap between New York and Tokyo shifts only when New York changes its clocks — not when Tokyo does anything.

The calendar-day problem

The 13–14 hour gap means New York and Tokyo are almost always on different calendar days. Specifically:

  • When it is Monday morning in New York (say, 9 AM), it is already Monday night or Tuesday in Tokyo.
  • When it is Tuesday 9 AM in Tokyo, it is still Monday evening in New York (around 7–8 PM the previous day).
  • The two cities share the same calendar date only for about one to two hours per day — in New York's late evening (around 11 PM in winter, 10 PM in summer), when Tokyo is in the early hours of the same next-day date.

This day-boundary confusion is the most common scheduling mistake on this route. Always confirm the date (not just the time) when setting up calls or sending calendar invites. The Time Zone Converter flags the day difference explicitly for every conversion.

Best times to schedule a meeting

There is no overlap during normal working hours — one side will always be outside their core day. The practical options are:

  • Early New York morning / Tokyo evening (summer): 7–8 AM New York = 8–9 PM Tokyo. Tokyo is near the end of their day; New York is just starting. The most commonly used slot for transatlantic-Pacific coordination.
  • Early New York morning / Tokyo late evening (winter): 7 AM New York = 9 PM Tokyo. Tokyo is after standard work hours. Useful only if Tokyo colleagues are willing to take a late call.
  • Late Tokyo morning / very early New York: 9 AM Tokyo = 7 PM New York (previous day) in summer. New York is still in their working day, Tokyo has just started — but New York would be taking the call at end-of-day, not morning.

Many companies working across this gap alternate — one week New York takes the early slot, the next week Tokyo stays late. The Meeting Planner shows both cities' working-hours blocks visually so you can spot the smallest gap.

Travel and jet lag notes

The New York–Tokyo flight takes around 14 hours westbound (NY→Tokyo, going "with" the Earth's rotation over the Pacific) and about 13 hours eastbound (Tokyo→NY, going over Alaska). Jet lag on this route is significant — 13–14 hours is close to a full reversal of the body clock.

  • New York → Tokyo: You arrive having travelled west across many time zones. Your body thinks it is still the previous day's evening. Try to stay awake until a reasonable Tokyo bedtime; exposure to morning daylight on arrival helps reset your clock faster.
  • Tokyo → New York: You arrive back on the US east coast often in the morning, having "gained" hours. Your body thinks it is late at night or the following day. Again, daylight is your friend — go outside rather than retreating to a dark hotel room.

Most business travellers allow at least 2–3 full days before important meetings on either end of this route.

Frequently asked questions

What time zone is Tokyo in?

Tokyo uses JST (Japan Standard Time, UTC+9) year-round. Japan does not observe daylight saving time, so Tokyo's clocks never change.

Is New York 13 or 14 hours behind Tokyo?

14 hours in New York winter (EST, roughly November to mid-March) and 13 hours in New York summer (EDT, roughly mid-March to November). Tokyo never shifts — only New York does.

What time is 9 AM New York in Tokyo?

11 PM Tokyo (same day) in winter, or 10 PM Tokyo (same day) in summer. Use our Time Zone Converter for an exact answer on any specific date.

Are New York and Tokyo ever on the same calendar day?

Rarely. Only when New York is in the late evening (roughly 10–11 PM) does Tokyo share the same calendar date. For most of the working day, Tokyo is already the following calendar day.

When is the best time to schedule a meeting between New York and Tokyo?

There is no comfortable overlap. The least-bad option is early New York morning (7–8 AM) which is Tokyo evening (8–9 PM in summer). Most teams alternate which side takes the inconvenient slot each week.

See live times and convert exact moments

For the live, currently-ticking time in both cities (and 60+ others), see the World Clock. To convert any specific date and time — particularly useful for spotting the calendar-day shift — use the Time Zone Converter. For coordinating a group call involving New York, Tokyo, and other cities, the Meeting Planner shows all working-hours blocks side by side.

Other ZoneKit guides