South Korea
KST
JST
Japan Standard Time
GMT +9
Illinois, USA
CDT

Time Difference

KST (Korea Standard Time) is 0 hours ahead of Japan Standard Time and 14 hours ahead of CDT (Central Daylight Time)
6:30 am06:30 in Seoul, South Korea is 6:30 am06:30 in JST and is 4:30 pm16:30 in Chicago, IL, USA

Seoul to JST call time
Best time for a conference call or a meeting is between 8am-6pm in Seoul which corresponds to 8am-6pm in JST
Seoul to Chicago call time
Best time for a conference call or a meeting is between 8pm-10pm in Seoul which corresponds to 6am-8am in Chicago

6:30 am06:30 KST (Korea Standard Time) (Seoul, South Korea). Offset UTC +9:00 hours
6:30 am06:30 Japan Standard Time (JST). Offset UTC +9:00 hours
4:30 pm16:30 CDT (Central Daylight Time) (Chicago, IL, USA). Offset UTC -5:00 hours

6:30 am06:30 Seoul, South Korea / 6:30 am06:30 JST / 4:30 pm16:30 Chicago, IL, USA

Seoul, South Korea JST Chicago, IL, USA
12am (midnight) 12am (midnight) 10am
1am 1am 11am
2am 2am 12pm (noon)
3am 3am 1pm
4am 4am 2pm
5am 5am 3pm
6am 6am 4pm
7am 7am 5pm
8am 8am 6pm
9am 9am 7pm
10am 10am 8pm
11am 11am 9pm
12pm (noon) 12pm (noon) 10pm
1pm 1pm 11pm
2pm 2pm 12am (midnight)
3pm 3pm 1am
4pm 4pm 2am
5pm 5pm 3am
6pm 6pm 4am
7pm 7pm 5am
8pm 8pm 6am
9pm 9pm 7am
10pm 10pm 8am
11pm 11pm 9am
0:00 0:00 10:00
1:00 1:00 11:00
2:00 2:00 12:00
3:00 3:00 13:00
4:00 4:00 14:00
5:00 5:00 15:00
6:00 6:00 16:00
7:00 7:00 17:00
8:00 8:00 18:00
9:00 9:00 19:00
10:00 10:00 20:00
11:00 11:00 21:00
12:00 12:00 22:00
13:00 13:00 23:00
14:00 14:00 0:00
15:00 15:00 1:00
16:00 16:00 2:00
17:00 17:00 3:00
18:00 18:00 4:00
19:00 19:00 5:00
20:00 20:00 6:00
21:00 21:00 7:00
22:00 22:00 8:00
23:00 23:00 9:00

Seoul Information

Time Zone

Abbreviation / Name
KST - Korea Standard Time
UTC / GMT Offset
+9:00 hours during Korea Standard Time, currently in use.

Seoul Facts

Country
South Korea
Alternative Names
Hanyang, SEL, Seoel, Seol, Seoul, Seoul-si, Seuel, Seul, Seula, Seulas, Seulo, Seulum, Seúl, Seül, Siul, Soeul, Sol, Soul, Sye-ul, Syou-ouen, Szoeul, Szöul, Séoul, Sêûl, Söul, Sŏul, Wang-ching, Wo-jo, Wō-jō, ciyol, han-yang, saul, seoul, seoulsi, seoulteugbyeolsi, seuli, shou er, shou er te bie shi, si'ula, siyola, sol, sola, souru, souru te bie shi, sywl, Σεούλ, Сеул, Соул, Сөүл, Սեուլ, סאול, סיאול, סעאל, سئول, سيول, سیول, سێئول, سېئول, सियोल, सोल, সিউল, சியோல், ಸೌಲ್, സോൾ, โซล, སེ་ཨུལ།, ဆိုးလ်မြို့, სეული, ሶል, សេអ៊ូល, ソウル, ソウル特別市, 首尔, 首尔特别市, 서울, 서울시, 서울특별시, 한양
Population
10,349,312
Currency
Won (KRW)
Geographic Coordinates
37° 33' N Latitude / 126° 58' E Longitude
International Dialing Code
+82

Japan Standard Time

Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Japan

Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo

Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Japan Standard Time remains the same

JST Time Zone Geo Map
JST timezone map

JST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for JST
  • I - short form of 'India'
IANA/Olson: Reflects JST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Tokyo
  • Japan
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Chicago Information

Time Zone

Abbreviation / Name
CDT - Central Daylight Time
UTC / GMT Offset
-5:00 hours during Central Daylight Time, currently in use.

Chicago Facts

Country
USA
State
Illinois
Alternative Names
CHI, Cekaga, Chi-ka-ko, Chi-kâ-kô, Chicago, Chicagu, Chikago, Chykaga, Cikaga, Cikago, Cikaqo, E-Chicago, Kikako, Shikago, Sicagum, Sikago, The Windy City, Tsikago, Windy City, chikhako, cikago, cikako, shikago, shkagw, shykaghw, shykagw, shykajw, shyqgw, sikago, sikkagea, syqgw, zhi jia ge, Çikago, Çikaqo, Ĉikago, Čikaga, Čikago, Čikāga, Čėkaga, Şikago, Σικάγο, Чикаго, Чикаґо, Чыкага, Չիկագո, שיקאגא, שיקגו, شيكاجو, شيكاغو, شکاگو, شیکاگو, شیکاگۆ, ܫܝܩܓܘ, शिकागो, শিকাগো, ਸ਼ਿਕਾਗੋ, சிகாகோ, చికాగో, ಶಿಕಾಗೊ, ഷിക്കാഗോ, ชิคาโก, ရှီကာဂိုမြို့, ჩიკაგო, ሺካጎ, ᓰᖄᑯ, Ṣìkágò, シカゴ, 芝加哥, 시카고, 𐍃𐌾𐌹𐌺𐌰𐌲𐍉
Population
2,720,546
Currency
Dollar (USD)
Geographic Coordinates
41° 51' N Latitude / 87° 39' W Longitude
International Dialing Code
+1