JST to UTC Time Converter

Convert JST to UTC - Quick & Accurate

Tokyo (JST)
UTC (UTC)
UTC is 9 hours behind JST

Quick Time Conversion

Los Angeles
Pacific Standard Time
UTC-8 (JST) / UTC-7 (PDT)
New York
Eastern Standard Time
UTC-5 (UTC) / UTC-4 (EDT)

Current Time Right Now

Pacific (JST/PDT)
Eastern (UTC/EDT)

Updates live every second

24-Hour Visual Comparison

JST (LA)
12am JST
1am JST
2am JST
3am JST
4am JST
5am JST
6am JST
7am JST
8am JST
9am JST
10am JST
11am JST
12pm JST
1pm JST
2pm JST
3pm JST
4pm JST
5pm JST
6pm JST
7pm JST
8pm JST
9pm JST
10pm JST
11pm JST
12a6a12p6p12a
UTC (NY)
3am UTC
4am UTC
5am UTC
6am UTC
7am UTC
8am UTC
9am UTC
10am UTC
11am UTC
12pm UTC
1pm UTC
2pm UTC
3pm UTC
4pm UTC
5pm UTC
6pm UTC
7pm UTC
8pm UTC
9pm UTC
10pm UTC
11pm UTC
12am UTC
1am UTC
2am UTC
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Business Hours (9AM-5PM)
Evening (5PM-9PM)
Night (9PM-6AM)

Hover over any hour to see corresponding time in both zones

Best Time for Meeting/Call

To schedule a meeting between JST and UTC:

Best Window (JST)
8:00 AM - 3:00 PM
Which is (UTC)
11:00 AM - 6:00 PM
Both parties in business hours
7-hour overlap window
Ideal for teams across US

Pro Tip: Schedule calls between 12:00 PM - 3:00 PM JST for maximum overlap with UTC business hours

Complete JST to UTC Conversion Table

JST TimeUTC TimeContext
12:00 AM03:00 PM
Midnight West Coast
01:00 AM04:00 PM
Late Night
02:00 AM05:00 PM
Late Night
03:00 AM06:00 PM
Late Night
04:00 AM07:00 PM
Late Night
05:00 AM08:00 PM
Late Night
06:00 AM09:00 PM
Early Morning JST
07:00 AM10:00 PM
Night Time
08:00 AM11:00 PM
Work Starts JST
09:00 AM12:00 AM
Meeting Window
10:00 AM01:00 AM
Meeting Window
11:00 AM02:00 AM
Meeting Window

Pacific Standard Time (JST)

UTC-8
UTC-7 during PDT
Major Cities:
  • • Los Angeles
  • • San Francisco
  • • Seattle
  • • San Diego
  • • Portland
Daylight Saving:

PDT (UTC-7) from March to November

IANA Identifier:

America/Los_Angeles

Eastern Standard Time (UTC)

UTC-5
UTC-4 during EDT
Major Cities:
  • • New York
  • • Miami
  • • Atlanta
  • • Boston
  • • Philadelphia
Daylight Saving:

EDT (UTC-4) from March to November

IANA Identifier:

America/New_York

Pacific Standard Time (JST) vs Eastern Standard Time (UTC)

Pacific Standard Time (JST)Eastern Standard Time (UTC)

Pacific Standard Time (JST) is 8 hours behind Coordinated Universal Time (UTC-8). During daylight saving time, the region observes Pacific Daylight Time (PDT), which is UTC-7.

Eastern Standard Time (UTC) is 5 hours behind Coordinated Universal Time (UTC-5). During daylight saving time, the region observes Eastern Daylight Time (EDT), which is UTC-4.

Where Is It Used In The United States?

  • California: Los Angeles, San Francisco, San Diego, San Jose, Sacramento
  • Washington: Seattle, Spokane, Tacoma, Vancouver
  • Oregon: Portland, Eugene, Salem
  • Nevada: Most of the state (except West Wendover)
  • New York: New York City, Buffalo, Rochester, Albany
  • Florida: Miami, Tampa, Orlando, Jacksonville
  • Pennsylvania: Philadelphia, Pittsburgh
  • Ohio: Columbus, Cleveland, Cincinnati
  • Georgia: Atlanta, Augusta, Savannah
  • North Carolina: Charlotte, Raleigh, Greensboro
  • Michigan: Detroit, Grand Rapids (most of state)
  • Massachusetts: Boston, Worcester, Cambridge
  • Virginia: Virginia Beach, Norfolk, Richmond
  • Plus: New Jersey, Connecticut, Maryland, South Carolina, Tennessee (eastern portions)

Where Is It Used In Canada?

  • British Columbia: Vancouver, Victoria, Surrey, Burnaby
  • Yukon: Whitehorse (observes JST year-round, no DST)
  • Ontario: Toronto, Ottawa, Mississauga, Hamilton
  • Quebec: Montreal, Quebec City, Laval (most of province)
  • Nunavut: Iqaluit and eastern portions

Other Countries And Regions

Mexico

  • Baja California: Tijuana, Mexicali, Ensenada

Caribbean

  • Bahamas: Nassau
  • Jamaica: Kingston, Montego Bay
  • Haiti: Port-au-Prince
  • Others: Cayman Islands, Turks and Caicos

Central & South America

  • Panama: Panama City
  • Colombia: Bogotá, Medellín, Cali
  • Peru: Lima, Arequipa, Cusco
  • Ecuador: Quito, Guayaquil

Key Facts

  • UTC Offset: UTC-8 (JST) / UTC-7 (PDT)
  • Region: Westernmost region of North America
  • Known For: Major tech hubs (Silicon Valley, Seattle)
  • Largest Cities: Los Angeles (4M), San Diego (1.4M), San Jose (1M)
  • Daylight Saving: Begins 2nd Sunday in March, ends 1st Sunday in November
  • UTC Offset: UTC-5 (UTC) / UTC-4 (EDT)
  • Region: Most populous time zone in North America
  • Known For: Major financial and cultural centers
  • Largest Cities: New York City (8.3M), Toronto (2.9M), Philadelphia (1.6M)
  • Coverage: Approximately 45% of US population
  • Daylight Saving: Begins 2nd Sunday in March, ends 1st Sunday in November

Quick Reference

Time Difference: UTC is 9 hours behind JST year-round
Consistency: This difference remains constant because both observe DST at the same dates
Distance: Covers approximately 3,000 miles across the United States
UTC Offsets: JST = UTC-8, UTC = UTC-5 | PDT = UTC-7, EDT = UTC-4 (during DST)
2025 DST: Starts March 9 at 2:00 AM, Ends November 2 at 2:00 AM

Frequently Asked Questions

JST (Pacific Standard Time) is 3 hours behind UTC (Eastern Standard Time). This means when it's 12:00 PM in Tokyo (JST), it's 3:00 PM in UTC (UTC).

The best time to call from JST to UTC is between 8:00 AM and 3:00 PM JST, which corresponds to 11:00 AM to 6:00 PM UTC. This ensures both parties are within standard business hours.

No, the time difference remains constant at 3 hours because both JST and UTC observe Daylight Saving Time at the same dates. JST becomes PDT (UTC-7) and UTC becomes EDT (UTC-4).

JST cities include Los Angeles, San Francisco, Seattle, San Diego, and Portland. UTC cities include New York, Miami, Atlanta, Boston, and Philadelphia.

In 2025, DST starts on March 9 at 2:00 AM and ends on November 2 at 2:00 AM. During DST, JST becomes PDT and UTC becomes EDT.

Related Time Converters

UTC → JSTJST → UTCUTC → UTCJST → CSTUTC → GMTJST → ISTUTC → JSTView All