Oleg Kononenko was assigned for a one year long mission with his MS-24 crewmate Nikolai Chub that started on September 15, 2023.

He exceeded the previous record of 878 days held by Gennady Padalka on 4 February 2024.

At the end of Expedition 70, O'Hara returned to Earth on Soyuz MS-24 with Roscosmos cosmonaut Oleg Novitsky and Belarusian spaceflight participant Marina Vasilevskaya (both on ISS EP-21) on 6 April 2024.

On the other hand, Kononenko and Chub remained onboard the ISS for a year and returned to Earth with NASA astronaut Tracy Caldwell-Dyson on Soyuz MS-25.

He broke the world record of 878 days in space held by Gennady Padalka on February 4, 2024 at 07:30:08 UTC.