Skip to main content
Live IANA Timezone Engine • Auto-DST

JST to EST Time Converter (Tokyo to New York)

Convert JST (Japan Standard Time, Tokyo) to EST (Eastern Time (US & Canada), New York) instantly. View live clocks, 24-hour comparison table, best meeting overlap hours, and developer code snippets.

JST — TokyoAsia/Tokyo
9:00 PM
Fri, Oct 16 (21:00)Awake / Flex
EST — New YorkAmerica/New_York
8:00 AM
Fri, Oct 16 (08:00)Awake / Flex

Interactive Hour Converter (JST → EST)

Drag slider to test any hour
When it is in JST (Tokyo):
9:00 AM (09:00)
It is in EST (New York):
8:00 PM (20:00)

24-Hour JST to EST Time Conversion Table

Side-by-side hourly reference with business hours overlap indicators.

JST (Tokyo)24hEST (New York)24hStatus in EST
12:00 AM00:0011:00 AM11:00
Work Hours
1:00 AM01:0012:00 PM12:00
Work Hours
2:00 AM02:001:00 PM13:00
Work Hours
3:00 AM03:002:00 PM14:00
Work Hours
4:00 AM04:003:00 PM15:00
Work Hours
5:00 AM05:004:00 PM16:00
Work Hours
6:00 AM06:005:00 PM17:00
Work Hours
7:00 AM07:006:00 PM18:00
Awake / Flex
8:00 AM08:007:00 PM19:00
Awake / Flex
9:00 AM09:008:00 PM20:00
Awake / Flex
10:00 AM10:009:00 PM21:00
Awake / Flex
11:00 AM11:0010:00 PM22:00
Awake / Flex
12:00 PM12:0011:00 PM23:00
Sleeping
1:00 PM13:0012:00 AM00:00
Sleeping
2:00 PM14:001:00 AM01:00
Sleeping
3:00 PM15:002:00 AM02:00
Sleeping
4:00 PM16:003:00 AM03:00
Sleeping
5:00 PM17:004:00 AM04:00
Sleeping
6:00 PM18:005:00 AM05:00
Sleeping
7:00 PM19:006:00 AM06:00
Sleeping
8:00 PM20:007:00 AM07:00
Awake / Flex
9:00 PM21:008:00 AM08:00
Awake / Flex
10:00 PM22:009:00 AM09:00
Work Hours
11:00 PM23:0010:00 AM10:00
Work Hours

Developer Code Snippets (JST to EST)

JavaScript / TypeScript (Intl API)
// Convert current time from JST (Asia/Tokyo) to EST (America/New_York)
const now = new Date();
const inEST = new Intl.DateTimeFormat('en-US', {
  timeZone: 'America/New_York',
  dateStyle: 'medium',
  timeStyle: 'long'
}).format(now);
console.log(inEST);
Python 3.9+ (zoneinfo)
# Python 3.9+ using standard zoneinfo
from datetime import datetime
from zoneinfo import ZoneInfo

dt_jst = datetime.now(ZoneInfo("Asia/Tokyo"))
dt_est = dt_jst.astimezone(ZoneInfo("America/New_York"))
print(f"JST: {dt_jst.strftime('%Y-%m-%d %H:%M %Z')}")
print(f"EST: {dt_est.strftime('%Y-%m-%d %H:%M %Z')}")

Frequently Asked Questions (JST → EST)

How do I convert JST to EST?

JST (Japan Standard Time) uses the IANA timezone identifier Asia/Tokyo (standard offset +09:00), while EST (Eastern Time (US & Canada)) uses America/New_York (standard offset -05:00). Use the interactive slider or the 24-hour table above to convert any hour accurately with automatic Daylight Saving Time (DST) adjustment.

What are the best meeting hours between Tokyo and New York?

Check the rows highlighted with "Best Meeting Overlap" in the 24-hour table above, where both JST and EST fall within standard 9:00 AM – 5:00 PM working hours.

Does JST to EST account for Daylight Saving Time (DST)?

Yes. Castov uses the browser's native IANA tzdb engine (Asia/Tokyo and America/New_York), which automatically applies official Daylight Saving Time transitions.

Related Timezone Conversions