HST/HDT
Hawaii Standard Time
GMT -10
HDT automatically adjusted to HST time zone, that is in use
Oklahoma, USA
CST

Time Difference

Hawaii Standard Time is 4 hours behind CST (Central Standard Time)
3:30 pm15:30 in HST is 7:30 pm19:30 in Oklahoma City, OK, USA

HDT to Oklahoma City call time
Best time for a conference call or a meeting is between 8am-3pm in HDT which corresponds to 11am-6pm in Oklahoma City

3:30 pm15:30 Hawaii Standard Time (HST). Offset UTC -10:00 hours
7:30 pm19:30 CST (Central Standard Time) (Oklahoma City, OK, USA). Offset UTC -6:00 hours

3:30 pm15:30 HST / 7:30 pm19:30 Oklahoma City, OK, USA

HST Oklahoma City, OK, USA
12am (midnight) 4am
1am 5am
2am 6am
3am 7am
4am 8am
5am 9am
6am 10am
7am 11am
8am 12pm (noon)
9am 1pm
10am 2pm
11am 3pm
12pm (noon) 4pm
1pm 5pm
2pm 6pm
3pm 7pm
4pm 8pm
5pm 9pm
6pm 10pm
7pm 11pm
8pm 12am (midnight)
9pm 1am
10pm 2am
11pm 3am
0:00 4:00
1:00 5:00
2:00 6:00
3:00 7:00
4:00 8:00
5:00 9:00
6:00 10:00
7:00 11:00
8:00 12:00
9:00 13:00
10:00 14:00
11:00 15:00
12:00 16:00
13:00 17:00
14:00 18:00
15:00 19:00
16:00 20:00
17:00 21:00
18:00 22:00
19:00 23:00
20:00 0:00
21:00 1:00
22:00 2:00
23:00 3:00

Hawaii Daylight Time

Offset: HDT is 9 hours behind Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: United States

HDT 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 west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Victor - Military abbreviation for HDT
  • V - short form of 'Victor'
IANA/Olson: Reflects HDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Adak
  • America/Atka
  • US/Aleutian
Time zones with the GMT -9 offset:
  • AKST - Alaska Standard Time
  • AHDT - Alaska-Hawaii Daylight Time
  • HADT - Hawaii-Aleutian Daylight Time
  • GAMT - Gambier Time
  • HDT - Hawaii Daylight Time
  • V - Victor Time Zone

Oklahoma City Information

Time Zone

Abbreviation / Name
CST - Central Standard Time
CDT - Central Daylight Time
UTC / GMT Offset
-6:00 hours during Central Standard Time, currently in use.
-5:00 hours during Central Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3am Sunday, March 10, 2024 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 1 hour to Sunday, March 10, 2024, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1am Sunday, November 3, 2024 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 1 hour to Sunday, November 3, 2024, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Oklahoma City Facts

Country
USA
State
Oklahoma
Alternative Names
Aklakhoma-Sici, Caayr Oklahoma, Cathair Oklahoma, Dinas Oklahoma, Kota Oklahoma, Kutha Oklahoma, Lungsod ng Oklahoma, Maxeponoe, Maxepónoe, OKC, Oklachoma Siti, Oklahoma, Oklahoma Ceety, Oklahoma City, Oklahoma Sites, Oklahoma Siti, Oklahoma Sitis, Oklahoma Sitės, Oklahoma Station, Oklahoma llaqta, Oklahomasitija, Oklahomaurbo, Oklakhoma, Oklakhoma Siti, Oklakhoma-Siti, Oklakhomae-Siti, Oklaxoma Shehiri, aklahma syty, ao ke la he ma shi, awklahwma syty, e ke la he ma cheng, okalahoma siti, okeullahomasiti, oklahoma nakaram, oklahoma siti, oklahoma-siti, okurahomashiti, xo khla ho ma si ti, Οκλαχόμα Σίτι, Аклахома-Сіці, Оклахомæ-Сити, Оклахома, Оклахома Сити, Оклахома-Сити, Оклахома-Сіті, Օկլահոմա Սիթի, אוקלהומה סיטי, أوكلاهوما سيتي, اوکلاہوما شہر، اوکلاہوما, اکلاهما سیتی, ओक्लाहोमा सिटी, ওকলাহোমা সিটি, ஓக்லஹோமா நகரம், โอคลาโฮมาซิตี, ოკლაჰომა-სიტი, ოქლაჰომა-სითი, オクラホマシティ, 俄克拉荷馬城, 奧克拉荷馬市, 오클라호마시티
Population
631,346
Currency
Dollar (USD)
Geographic Coordinates
35° 28' N Latitude / 97° 30' W Longitude
International Dialing Code
+1