Updating current time…
CAST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
North KoreaKST
UTC+9
1h ahead
12am
3am
6am
9am
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3pm
6pm
9pm

Quick answers

Selected conversion

8:00 pm20:00 CAST (UTC+8), Oct 23, 2026 = 9:00 pm21:00 KST (UTC+9), Oct 23, 2026

CAST is 1 hour behind Hamhŭng.

How the time difference changes

CAST is 1 hour behind Hamhung year-round.

Working hours of 9:00 am to 6:00 pm in CAST correspond to 10:00 am to 7:00 pm in Hamhung.Working hours of 09:00 to 18:00 in CAST correspond to 10:00 to 19:00 in Hamhung.

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

Time Difference

Casey Time is 1 hour behind KST (Korea Standard Time).
8:00 pm20:00 in CAST is 9:00 pm21:00 in Hamhung, North Korea

CAST to Hamhŭng call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in CAST which corresponds to 10am-6pm10:00-18:00 in Hamhŭng

8:00 pm20:00 Casey Time (CAST). Offset UTC +8:00 hours
9:00 pm21:00 KST (Korea Standard Time) (Hamhung, North Korea). Offset UTC +9:00 hours

8:00 pm20:00 CAST / 9:00 pm21:00 Hamhung, North Korea

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Hourly time comparison
CASTHamhung, North Korea
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Casey Time

Offset: CAST is 8 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica

Daylight Saving: Clocks in Casey Time (CAST) do not change for daylight saving time, so CAST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

CAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for CAST
  • H - short form of 'Hotel'
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time

Hamhŭng Time Zone and Facts

Time Zone

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

Hamhŭng Facts

Country
North Korea
Alternative Names
Hamheung, Hamhung, Hamhungas, Hamhungo, Hamhŭng, Hienhing, Kanko, Kankō, hamheung, hamheungsi, xian xing shi, 咸興市, 함흥, 함흥시
Population
559,056
Currency
Won (KPW)
Geographic Coordinates
39° 55' N Latitude / 127° 32' E Longitude
International Dialing Code
+850