UTC to Hanoi to Incheon to Columbus Time Converter

Updating current time…
UTC
Coordinated Universal Time
UTC+0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Hanoi
VietnamICT
UTC+7
7h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Incheon
South KoreaKST
UTC+9
9h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Columbus
Ohio, USAEDT
UTC−4
4h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Clocks in Columbus go back 1 hour on Sun, Nov 1 · EDT → EST

Quick answers

Selected conversion

12:00 pm12:00 UTC (UTC+0), Oct 31, 2026 = 7:00 pm19:00 ICT (UTC+7), Oct 31, 2026 = 9:00 pm21:00 KST (UTC+9), Oct 31, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 31, 2026

UTC is 7 hours behind Hanoi. UTC is 9 hours behind Incheon. UTC is 4 hours ahead of Columbus.

How the time difference changes

UTC to Hanoi

UTC is 7 hours behind Hanoi year-round.

Working hours of 9:00 am to 6:00 pm in UTC correspond to 4:00 pm to 1:00 am (next day) in Hanoi.Working hours of 09:00 to 18:00 in UTC correspond to 16:00 to 01:00 (next day) in Hanoi.

UTC to Incheon

UTC is 9 hours behind Incheon year-round.

Working hours of 9:00 am to 6:00 pm in UTC correspond to 6:00 pm to 3:00 am (next day) in Incheon.Working hours of 09:00 to 18:00 in UTC correspond to 18:00 to 03:00 (next day) in Incheon.

UTC to Columbus

For most of the year, UTC is 4 hours ahead of Columbus. From Nov 1, 2026 to Mar 14, 2027, UTC is 5 hours ahead of Columbus.

For most of the year, working hours of 9:00 am to 6:00 pm in UTC correspond to 5:00 am to 2:00 pm in Columbus. At other times of the year, working hours of 9:00 am to 6:00 pm in UTC correspond to 4:00 am to 1:00 pm in Columbus.For most of the year, working hours of 09:00 to 18:00 in UTC correspond to 05:00 to 14:00 in Columbus. At other times of the year, working hours of 09:00 to 18:00 in UTC correspond to 04:00 to 13:00 in Columbus.

Compare UTC time with Hanoi, Incheon, and Columbus time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Coordinated Universal Time is 7 hours behind ICT (Indochina Time). Coordinated Universal Time is 9 hours behind KST (Korea Standard Time). Coordinated Universal Time is 4 hours ahead of EDT (Eastern Daylight Time).
12:00 pm12:00 in UTC is 7:00 pm19:00 in Hanoi, Vietnam and is 9:00 pm21:00 in Incheon, South Korea and is 8:00 am08:00 in Columbus, OH, USA

UTC to Hanoi call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in UTC which corresponds to 4pm-6pm16:00-18:00 in Hanoi
UTC to Incheon call time
Best time for a conference call or a meeting is between 8:30am-9:30am08:30-09:30 in UTC which corresponds to 5:30pm-6:30pm17:30-18:30 in Incheon. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
UTC to Columbus call time
Best time for a conference call or a meeting is between 1pm-6pm13:00-18:00 in UTC which corresponds to 9am-2pm09:00-14:00 in Columbus

12:00 pm12:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours
7:00 pm19:00 ICT (Indochina Time) (Hanoi, Vietnam). Offset UTC +7:00 hours
9:00 pm21:00 KST (Korea Standard Time) (Incheon, South Korea). Offset UTC +9:00 hours
8:00 am08:00 EDT (Eastern Daylight Time) (Columbus, OH, USA). Offset UTC -4:00 hours

12:00 pm12:00 UTC / 7:00 pm19:00 Hanoi, Vietnam / 9:00 pm21:00 Incheon, South Korea / 8:00 am08:00 Columbus, OH, USA

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
UTCHanoi, VietnamIncheon, South KoreaColumbus, OH, USA
7:00am9:00am8:00pm previous day
8:00am10:00am9:00pm previous day
9:00am11:00am10:00pm previous day
10:00am12:00pm11:00pm previous day
11:00am1:00pm12:00am
12:00pm2:00pm1:00am
1:00pm3:00pm2:00am
2:00pm4:00pm3:00am
3:00pm5:00pm4:00am
4:00pm6:00pm5:00am
5:00pm7:00pm6:00am
6:00pm8:00pm7:00am
7:00pm9:00pm8:00am
8:00pm10:00pm9:00am
9:00pm11:00pm10:00am
10:00pm12:00am next day11:00am
11:00pm1:00am next day12:00pm
12:00am next day2:00am next day1:00pm
1:00am next day3:00am next day2:00pm
2:00am next day4:00am next day3:00pm
3:00am next day5:00am next day4:00pm
4:00am next day6:00am next day5:00pm
5:00am next day7:00am next day6:00pm
6:00am next day8:00am next day7:00pm
07:0009:0020:00 previous day
08:0010:0021:00 previous day
09:0011:0022:00 previous day
10:0012:0023:00 previous day
11:0013:0000:00
12:0014:0001:00
13:0015:0002:00
14:0016:0003:00
15:0017:0004:00
16:0018:0005:00
17:0019:0006:00
18:0020:0007:00
19:0021:0008:00
20:0022:0009:00
21:0023:0010:00
22:0000:00 next day11:00
23:0001:00 next day12:00
00:00 next day02:00 next day13:00
01:00 next day03:00 next day14:00
02:00 next day04:00 next day15:00
03:00 next day05:00 next day16:00
04:00 next day06:00 next day17:00
05:00 next day07:00 next day18:00
06:00 next day08:00 next day19:00

Coordinated Universal Time

Offset: UTC is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Faroe Islands, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Portugal, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Spain, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the UTC time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is the successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but UTC is the standard the scientific community uses.
UTC has been the time standard commonly used across the world since 1972. It is used in many technical fields, such as aviation and meteorology, and to synchronize time across internet networks.

Map of the areas on Coordinated Universal Time (UTC)
UTC all year UTC part of the year

Today some of the lighter areas are on UTC−1.

Open the world time zone map© OpenStreetMap

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Hanoi Time Zone and Facts

Time Zone

Abbreviation / Offset
ICT – Indochina Time, UTC+7 (no daylight saving time)

Hanoi Facts

Country
Vietnam
Alternative Names
Anoi, Anoy, Anòy, HAN, Ha Noi, Ha Nui, Hanoi, Hanoj, Hanoja, Hanojo, Hanojus, Hanoy, Hanoí, Hanoï, Hanòi, Hanói, Ho-nui-su, Hà Nội, Hò-nui-sṳ, Keicho, Khanoj, hano'i, hanoi, hanoy, hanwy, hanxy, he nei, he nei shi, hyanaya, khanwy, Ανόι, Ханой, Ханој, Հանոյ, האנוי, خانوي, هانوى, هانوي, هانوی, ھانۆی, ہنوئی, हनोई, হ্যানয়, ਹਨੋਈ, ହାନୋଇ, ஹனோய், ಹಾನೊಯ್, හැනෝයි, ฮานอย, ཧེ་ནོ།, ဟနွိုင်းမြို့, ჰანოი, ሀኖይ, ទីក្រុងហានូយ, Ḥanoi, ハノイ, 河內, 河內市, 하노이
Population
8,053,663
Currency
Dong (VND)
Geographic Coordinates
21° 01' N Latitude / 105° 50' E Longitude
International Dialing Code
+84
More About Hanoi
Hanoi local time and city facts

Incheon Time Zone and Facts

Time Zone

Abbreviation / Offset
KST – Korea Standard Time, UTC+9 (no daylight saving time)

Incheon Facts

Country
South Korea
Alternative Names
Chemulpo, Incchon, Inch'on, Inch'ŏn, Incheon, Incheon-si, Inchkhon, Inchkhun, Inchon, Inchona, Incon, Inconas, Incshon, Intson, Inĉon, Inčchon, Inčhona, Inčonas, JCN, Nhan Xuyen, Nhân Xuyên, anchn, antshwn, aynchywn, incevona, incheon, incheongwang-yeogsi, incheonsi, inkiyon, ren chuan guang yu shi, xin chxn, İncheon, Ίντσον, Інчхон, Инчон, Инчхон, Инчхън, אינצ'ון, إنتشون, انچن, اینچئون, इंचेवॉन, இங்கியோன், อินช็อน, 仁川广域市, 仁川広域市, 仁川廣域市, 인천, 인천광역시, 인천시
Population
3,015,482
Currency
Won (KRW)
Geographic Coordinates
37° 27' N Latitude / 126° 42' E Longitude
International Dialing Code
+82
More About Incheon
Incheon local time and city facts

Columbus Time Zone and Facts

Time Zone

Abbreviation / Offset
EDT – Eastern Daylight Time, UTC-4 (now, daylight saving time)
EST – Eastern Standard Time, UTC-5 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 at 02:00: clocks go back 1 hour to 1:00 am01:00 (EST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (EDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Columbus Facts

Country
USA
State
Ohio
Alternative Names
CMH, Columbopolis, Columbus, Columbus i Ohio, Franklin, Franklinton, Kalumbus, Kolambus, Kolompous, Kolumbas, Kolumbs, Kolumbu, Kolumbus, Kolumbusa, Kulumbus, ge lun bu, kalabasa, kalambasa, kholambas, klmbws awhayw, kolambas, kolambasa, kolampas, kolleombeoseu, koronbasu, kwlwmbws, qwlwmbws, Κολόμπους, Калумбус, Коламбус, Колумбус, Кълъмбъс, Կոլումբուս, קאלומבוס, קולומבוס, كولومبوس, کلمبوس، اوهایو, کولمبس، اوہائیو, कोलंबस, कोलम्बस, कोलम्बस्, কলম্বাস, ਕਲੰਬਸ, கொலம்பஸ், โคลัมบัส, კოლუმბუსი, コロンバス, 哥伦布, 哥倫布, 콜럼버스
Population
913,175
Currency
Dollar (USD)
Geographic Coordinates
39° 57' N Latitude / 82° 59' W Longitude
International Dialing Code
+1
More About Columbus
Columbus local time and city facts