UTC to JST Converter

Convert between Coordinated Universal Time (UTC) and Japan Standard Time (JST).

UTC

=

JST (Japan Standard Time)

UTC to JST Converter
JST to UTC Converter
UTC (Coordinated Universal Time)
  • Offset: UTC+0 (no offset)
  • Description: The primary time standard by which the world regulates clocks and time
  • Usage: Used as the reference for all other time zones
  • Countries: Used worldwide as the standard reference
JST (Japan Standard Time)
  • Offset: UTC+9 (9 hours ahead of UTC)
  • Countries: Japan, South Korea (KST)
  • Major Cities: Tokyo, Osaka, Seoul, Busan, Yokohama
  • Islands: All of Japan, Jeju Island (South Korea)
  • DST: No daylight saving time observed
Key Difference: Japan Standard Time (JST) is 9 hours ahead of Coordinated Universal Time (UTC). This means when it's 12:00 PM UTC, it's 9:00 PM JST.

Time Difference between UTC and JST

Japan Standard Time (JST) is 9 hours ahead of Coordinated Universal Time.

UTC+9

JST is 9 hours ahead of UTC

No DST

JST does not observe daylight saving time

Year-round

Same offset throughout the year

UTC to JST Conversion Chart

12-Hour Format
UTC Time JST Time
12:00 AM09:00 AM
01:00 AM10:00 AM
02:00 AM11:00 AM
03:00 AM12:00 PM (Noon)
04:00 AM01:00 PM
05:00 AM02:00 PM
06:00 AM03:00 PM
07:00 AM04:00 PM
08:00 AM05:00 PM
09:00 AM06:00 PM
10:00 AM07:00 PM
11:00 AM08:00 PM
12:00 PM09:00 PM
01:00 PM10:00 PM
02:00 PM11:00 PM
03:00 PM12:00 AM
04:00 PM01:00 AM
05:00 PM02:00 AM
06:00 PM03:00 AM
07:00 PM04:00 AM
08:00 PM05:00 AM
09:00 PM06:00 AM
10:00 PM07:00 AM
11:00 PM08:00 AM
24-Hour Format
UTC Time JST Time
00:0009:00
01:0010:00
02:0011:00
03:0012:00
04:0013:00
05:0014:00
06:0015:00
07:0016:00
08:0017:00
09:0018:00
10:0019:00
11:0020:00
12:0021:00
13:0022:00
14:0023:00
15:0000:00
16:0001:00
17:0002:00
18:0003:00
19:0004:00
20:0005:00
21:0006:00
22:0007:00
23:0008:00

About Japan Standard Time (JST)

Geographic Coverage

JST covers the entire country of Japan and parts of South Korea:

  • Japan: All 47 prefectures including Hokkaido, Honshu, Shikoku, Kyushu, and Okinawa
  • Major Cities: Tokyo, Osaka, Kyoto, Yokohama, Nagoya, Sapporo, Fukuoka
  • South Korea: Uses KST (Korea Standard Time) which is identical to JST
  • Islands: All Japanese islands, Jeju Island (South Korea)
Business and Culture

JST is important for:

  • Business: Tokyo Stock Exchange, major corporations
  • Technology: Leading tech companies and innovation hubs
  • Tourism: Popular destinations like Tokyo, Kyoto, Osaka
  • Media: Broadcasting, news, entertainment industry
Historical Context
  • Established: 1886 (Meiji period)
  • Previous System: Local solar time before standardization
  • Railway Impact: JST was introduced to standardize railway schedules
  • Consistency: No daylight saving time since 1951
International Relations
  • Same as KST: South Korea uses identical time zone
  • Business Hours: 9 AM - 6 PM (typical Japanese workday)
  • Global Trading: Overlaps with Asian and Pacific markets
  • Technology Sector: Major hub for global tech companies
Note: Japan does not observe daylight saving time, making JST consistent year-round. This is different from many other countries that adjust their clocks seasonally.

Quick Reference

Business Hours

9:00 AM - 6:00 PM JST
Typical Japanese workday

Stock Market

9:00 AM - 3:00 PM JST
Tokyo Stock Exchange

Peak Hours

7:00 AM - 9:00 AM JST
Morning rush hour