Passage: On 4 December 1950, the first successful interception of a jet bomber by a jet fighter occurred when MiG-15 pilot Aleksandr F. Andrianov shot down an RB-45C over China. Captain Charles McDonough was the only member of the four-man crew able to parachute from the plane, although he died after being captured.Operation Fandango, sometimes called Operation Backbreaker, entailed modifications to the aircraft for nuclear missions. In addition, the 40 B-45s allocated to the program were equipped with a new defensive system and additional fuel tankage. Despite the magnitude of the modifications project, plus ongoing problems with the early jet engines, nuclear-capable B-45s began reaching the United Kingdom in May 1952, and deployment of the 40 aircraft was completed in mid-June. It was at about this same time that RB-45s of the 323rd Strategic Reconnaissance Squadron began to arrive in Japan to fly alongside the 91st Strategic Reconnaissance Squadron, supplementing the World War II-era piston-engine RB-29s which had proved to be easy targets for North Korean MiGs. The RB-45s provided valuable intelligence throughout the remainder of the Korean War, despite the limited number of airframes available. RB-45Cs flew many daylight missions until early 1952, when they were switched to night operations after an RB-45 was almost lost to a MiG-15.

Question: When did daylight missions end?
until early 1952