One Ordinary Day

One Ordinary Day
Promotional poster
Also known asThat Night (former)
Hangul
어느 날
Literal meaningOne Day
Revised RomanizationEoneu Nal
McCune–ReischauerŎnŭ Nal
Genre
Created byChorokbaem Media
Based onCriminal Justice
by Peter Moffat
Developed byCoupang Play
Written byKwon Soon-kyu
Directed byLee Myung-woo
Starring
Music byGaemi (music manager)
Country of originSouth Korea
Original languageKorean
No. of episodes8
Production
Executive producers
  • Ahn Hye-yeon (Coupang Play)
  • Kim Seong-han (Coupang Play)
  • Yoo Ho-seong (Chorokbaem Media)
Producers
  • Kim Sang-heon (Chorokbaem Media)
  • Yu Jin-oh (Studio M)
  • Kim Mi-hye (Gold Medalist)
  • Lee Ro-be (Gold Medalist)
Editors
  • Im Seon-kyung
  • Lee Ji-hye
Running time55–79 minutes
Production companies
Budget20 billion
Original release
NetworkCoupang Play
ReleaseNovember 27 (2021-11-27) 
December 19, 2021 (2021-12-19)

One Ordinary Day (Korean: 어느 날; RR: Eoneu Nal; lit. One Day) is a 2021 South Korean television series starring Kim Soo-hyun and Cha Seung-won. It is based on the British television series Criminal Justice written by Peter Moffat. It premiered on Coupang Play in South Korea on November 27, 2021, and aired a total of 8 episodes. It is streaming exclusively through Viu outside South Korea.