JST to EST Converter

9:00 AM JST on Tuesday is 8:00 PM EDT on Monday in summer and 7:00 PM EST in winter. For most of the day it is still yesterday in New York.

JST and EST right now

JST to EST time chart

Each hour of the day in Japan Standard Time and the same moment in Eastern Time. The gap changes during the year, so each version gets its own column.

Working hours, 9 AM–5 PMNight, 10 PM–7 AM

When the difference changes

JST never changes, so the gap moves only when US clocks do. Changes in the coming year:

• ←Sunday, November 1, 2026US clocks go back 1 hour at 2:00 AM. Eastern Time is then 14 hours behind Japan Standard Time.
• →Sunday, March 14, 2027US clocks go forward 1 hour at 2:00 AM. Eastern Time is then 13 hours behind Japan Standard Time.

Standard or daylight time?

Strictly, EST is standard time. From the second Sunday in March to the first Sunday in November the clocks show EDT instead. Most people keep writing EST all year to mean the zone, and this page does the same: times follow the clocks in New York whatever the season.

Calls between Tokyo and New York

There is no time when both offices are open. A 9:00 AM call in New York is 10:00 PM in Tokyo in summer and 11:00 PM in winter. A 9:00 AM meeting in Tokyo is 8:00 PM or 7:00 PM the evening before in New York, which is the usual compromise.

Japan and Korea

South Korea's clock (KST) is the same as Japan's, UTC+9, so everything on this page works for Seoul too. Neither country uses daylight saving time.

Related conversions

• PST to EST
• CST to EST
• EST to CST
• MST to EST
• Florida time zone
• All conversions
• Time difference calculator

Sources

• Wikipedia — Japan Standard Time
• Wikipedia — Eastern Time Zone
• 15 U.S.C. § 260a — Advancement of time (daylight saving period)
• IANA Time Zone Database

Last checked October 21, 2026.