Japan Standard Time (JST)
Japan Standard Time is UTC+9 all year. Japan does not observe daylight saving time.
- IANA zone
- Asia/Tokyo
- Offset
- UTC+9 all year
- Used in
- Japan
- Major cities
- Tokyo, Osaka, Yokohama, Nagoya, Sapporo
JST to EST converter
Convert Japan Standard Time (JST) to Eastern Time (EST/EDT), with daylight saving applied for the exact date you pick.
From
Tue, Oct 27
To
Mon, Oct 26 Previous day
| Su | Mo | Tu | We | Th | Fr | Sa |
|---|
JST 9 to 5 EDT 9 to 5
- From zone
- Japan Standard Time
- Offset and clock
- UTC+9 No daylight saving time
- IANA name
- Asia/Tokyo
- To zone
- Eastern Daylight Time
- Offset and clock
- UTC−4 Daylight saving time
- IANA name
- America/New_York
EDT is 13 hours behind JST.
- Time difference
- EDT is 13 hours behind JST for most of the year (238 days in 2026). The gap is 14 hours for about 18 weeks in 2026.
- Meeting window
- Working days of 9 AM to 5 PM do not overlap. The least disruptive slot is around 6:00 AM JST, which is 5:00 PM (previous day) EDT while JST and EDT apply.
- Daylight saving
- Eastern Time changes its clocks twice a year; Japan Standard Time does not.
Where JST and EST apply
Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.
- Japan Standard Time
- Eastern Time
- Same UTC offset right now, different zone rules
Hour by hour
Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.
Shaded rows fall inside working hours in both places.
| Tokyo (JST) | New York (EDT) | Working hours |
|---|---|---|
| 12:00 AM | 11:00 AM previous day | |
| 1:00 AM | 12:00 PM previous day | |
| 2:00 AM | 1:00 PM previous day | |
| 3:00 AM | 2:00 PM previous day | |
| 4:00 AM | 3:00 PM previous day | |
| 5:00 AM | 4:00 PM previous day | |
| 6:00 AM | 5:00 PM previous day | |
| 7:00 AM | 6:00 PM previous day | |
| 8:00 AM | 7:00 PM previous day | |
| 9:00 AM | 8:00 PM previous day | |
| 10:00 AM | 9:00 PM previous day | |
| 11:00 AM | 10:00 PM previous day | |
| 12:00 PM | 11:00 PM previous day | |
| 1:00 PM | 12:00 AM | |
| 2:00 PM | 1:00 AM | |
| 3:00 PM | 2:00 AM | |
| 4:00 PM | 3:00 AM | |
| 5:00 PM | 4:00 AM | |
| 6:00 PM | 5:00 AM | |
| 7:00 PM | 6:00 AM | |
| 8:00 PM | 7:00 AM | |
| 9:00 PM | 8:00 AM | |
| 10:00 PM | 9:00 AM | |
| 11:00 PM | 10:00 AM |
JST to EST conversion table
Common JST times and their EST equivalents. The second column covers the part of the year when the clocks are on a different gap.
| Japan Standard Time | EDT 13 h behind, most of the year (238 days in 2026) | EST 14 h behind, about 18 weeks in 2026 |
|---|---|---|
| 12:00 AM | 11:00 AM (previous day) | 10:00 AM (previous day) |
| 6:00 AM | 5:00 PM (previous day) | 4:00 PM (previous day) |
| 8:00 AM | 7:00 PM (previous day) | 6:00 PM (previous day) |
| 9:00 AM | 8:00 PM (previous day) | 7:00 PM (previous day) |
| 10:00 AM | 9:00 PM (previous day) | 8:00 PM (previous day) |
| 12:00 PM | 11:00 PM (previous day) | 10:00 PM (previous day) |
| 2:00 PM | 1:00 AM | 12:00 AM |
| 3:00 PM | 2:00 AM | 1:00 AM |
| 5:00 PM | 4:00 AM | 3:00 AM |
| 6:00 PM | 5:00 AM | 4:00 AM |
| 8:00 PM | 7:00 AM | 6:00 AM |
| 10:00 PM | 9:00 AM | 8:00 AM |
How the gap changes in 2026 and 2027
Each row is a stretch of days with one constant difference, split at every clock change.
| Dates | JST | EST | Difference |
|---|---|---|---|
| Thu, Jan 1, 2026 until Sun, Mar 8, 2026 | JST | EST | EST 14 h behind |
| Sun, Mar 8, 2026 until Sun, Nov 1, 2026 | JST | EDT | EDT 13 h behind |
| Sun, Nov 1, 2026 until Sun, Mar 14, 2027 | JST | EST | EST 14 h behind |
| Sun, Mar 14, 2027 until Sun, Nov 7, 2027 | JST | EDT | EDT 13 h behind |
| Sun, Nov 7, 2027 until Sat, Jan 1, 2028 | JST | EST | EST 14 h behind |
Upcoming clock changes
- Eastern Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
- Eastern Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
- Eastern Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
- Eastern Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM
About the two zones
Eastern Time (EST / EDT)
Eastern Time follows the clock in New York. It is Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) from the second Sunday in March to the first Sunday in November.
- IANA zone
- America/New_York
- Offset
- UTC−5 standard, UTC−4 daylight saving
- Used in
- the eastern United States and Canada
- Major cities
- New York, Toronto, Washington, D.C., Atlanta, Miami, Boston
People often write EST all year round. Strictly, EST is only the winter offset; in summer the eastern US is on EDT. The converter follows the real New York clock for the date you pick.
JST and EST, answered
What is the time difference between JST and EST?
EDT is 13 hours behind JST for most of the year (238 days in 2026). The gap is 14 hours for about 18 weeks in 2026.
What is a good meeting time for JST and EST?
Working days of 9 AM to 5 PM do not overlap. The least disruptive slot is around 6:00 AM JST, which is 5:00 PM (previous day) EDT while JST and EDT apply.
Does daylight saving time affect JST to EST?
Eastern Time changes its clocks twice a year; Japan Standard Time does not. The next change is on Sunday, November 1, 2026 in Eastern Time.
Which EST does the JST to EST converter use?
People often write EST all year round. Strictly, EST is only the winter offset; in summer the eastern US is on EDT. The converter follows the real New York clock for the date you pick.