Columbus to Incheon to Hanoi to UTC Time Converter

Updating current time…
Columbus
Ohio, USAEST
UTC−5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Incheon
South KoreaKST
UTC+9
tomorrow (next day)
14h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Hanoi
VietnamICT
UTC+7
12h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
UTC
Coordinated Universal Time
UTC+0
5h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

10:00 am10:00 EST (UTC-5), Nov 1, 2026 = 12:00 am00:00 KST (UTC+9), Nov 2, 2026 = 10:00 pm22:00 ICT (UTC+7), Nov 1, 2026 = 3:00 pm15:00 UTC (UTC+0), Nov 1, 2026

Columbus is 14 hours behind Incheon. Columbus is 12 hours behind Hanoi. Columbus is 5 hours behind UTC.

How the time difference changes

Columbus to Incheon

For most of the year, Columbus is 13 hours behind Incheon. From Nov 1, 2026 to Mar 14, 2027, Columbus is 14 hours behind Incheon.

For most of the year, working hours of 9:00 am to 6:00 pm in Columbus correspond to 10:00 pm to 7:00 am (next day) in Incheon. At other times of the year, working hours of 9:00 am to 6:00 pm in Columbus correspond to 11:00 pm to 8:00 am (next day) in Incheon.For most of the year, working hours of 09:00 to 18:00 in Columbus correspond to 22:00 to 07:00 (next day) in Incheon. At other times of the year, working hours of 09:00 to 18:00 in Columbus correspond to 23:00 to 08:00 (next day) in Incheon.

Columbus to Hanoi

For most of the year, Columbus is 11 hours behind Hanoi. From Nov 1, 2026 to Mar 14, 2027, Columbus is 12 hours behind Hanoi.

For most of the year, working hours of 9:00 am to 6:00 pm in Columbus correspond to 8:00 pm to 5:00 am (next day) in Hanoi. At other times of the year, working hours of 9:00 am to 6:00 pm in Columbus correspond to 9:00 pm to 6:00 am (next day) in Hanoi.For most of the year, working hours of 09:00 to 18:00 in Columbus correspond to 20:00 to 05:00 (next day) in Hanoi. At other times of the year, working hours of 09:00 to 18:00 in Columbus correspond to 21:00 to 06:00 (next day) in Hanoi.

Columbus to UTC

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

For most of the year, working hours of 9:00 am to 6:00 pm in Columbus correspond to 1:00 pm to 10:00 pm in UTC. At other times of the year, working hours of 9:00 am to 6:00 pm in Columbus correspond to 2:00 pm to 11:00 pm in UTC.For most of the year, working hours of 09:00 to 18:00 in Columbus correspond to 13:00 to 22:00 in UTC. At other times of the year, working hours of 09:00 to 18:00 in Columbus correspond to 14:00 to 23:00 in UTC.

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

Time Difference

EST (Eastern Standard Time) is 14 hours behind KST (Korea Standard Time). EST (Eastern Standard Time) is 12 hours behind ICT (Indochina Time). EST (Eastern Standard Time) is 5 hours behind Coordinated Universal Time.
10:00 am10:00 in Columbus, OH, USA is 12:00 am00:00 in Incheon, South Korea and is 10:00 pm22:00 in Hanoi, Vietnam and is 3:00 pm15:00 in UTC

Columbus to Incheon call time
Best time for a conference call or a meeting is between 6pm-7pm18:00-19:00 in Columbus which corresponds to 8am-9am08:00-09:00 in Incheon (next day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
Columbus to Hanoi call time
Best time for a conference call or a meeting is between 7am-8am07:00-08:00 in Columbus which corresponds to 7pm-8pm19:00-20:00 in Hanoi. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
Columbus to UTC call time
Best time for a conference call or a meeting is between 9am-1pm09:00-13:00 in Columbus which corresponds to 2pm-6pm14:00-18:00 in UTC

10:00 am10:00 EST (Eastern Standard Time) (Columbus, OH, USA). Offset UTC -5:00 hours
12:00 am00:00 KST (Korea Standard Time) (Incheon, South Korea). Offset UTC +9:00 hours
10:00 pm22:00 ICT (Indochina Time) (Hanoi, Vietnam). Offset UTC +7:00 hours
3:00 pm15:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours

10:00 am10:00 Columbus, OH, USA / 12:00 am00:00 Incheon, South Korea / 10:00 pm22:00 Hanoi, Vietnam / 3:00 pm15:00 UTC

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
Columbus, OH, USAIncheon, South KoreaHanoi, VietnamUTC
1:00pm11:00am4:00am
2:00pm12:00pm5:00am
4:00pm2:00pm7:00am
5:00pm3:00pm8:00am
6:00pm4:00pm9:00am
7:00pm5:00pm10:00am
8:00pm6:00pm11:00am
9:00pm7:00pm12:00pm
10:00pm8:00pm1:00pm
11:00pm9:00pm2:00pm
12:00am next day10:00pm3:00pm
1:00am next day11:00pm4:00pm
2:00am next day12:00am next day5:00pm
3:00am next day1:00am next day6:00pm
4:00am next day2:00am next day7:00pm
5:00am next day3:00am next day8:00pm
6:00am next day4:00am next day9:00pm
7:00am next day5:00am next day10:00pm
8:00am next day6:00am next day11:00pm
9:00am next day7:00am next day12:00am next day
10:00am next day8:00am next day1:00am next day
11:00am next day9:00am next day2:00am next day
12:00pm next day10:00am next day3:00am next day
1:00pm next day11:00am next day4:00am next day
13:0011:0004:00
14:0012:0005:00
16:0014:0007:00
17:0015:0008:00
18:0016:0009:00
19:0017:0010:00
20:0018:0011:00
21:0019:0012:00
22:0020:0013:00
23:0021:0014:00
00:00 next day22:0015:00
01:00 next day23:0016:00
02:00 next day00:00 next day17:00
03:00 next day01:00 next day18:00
04:00 next day02:00 next day19:00
05:00 next day03:00 next day20:00
06:00 next day04:00 next day21:00
07:00 next day05:00 next day22:00
08:00 next day06:00 next day23:00
09:00 next day07:00 next day00:00 next day
10:00 next day08:00 next day01:00 next day
11:00 next day09:00 next day02:00 next day
12:00 next day10:00 next day03:00 next day
13:00 next day11:00 next day04:00 next day

Columbus Time Zone and Facts

Time Zone

Abbreviation / Offset
EST – Eastern Standard Time, UTC-5 (now)
EDT – Eastern Daylight Time, UTC-4 (daylight saving 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.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 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.
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

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

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

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