Night does not have to be related to the real time of day. If you give 20hrs day, 1/4 hr dawn and dusk, 1 1/2 hr night and allow to free run, the 22hr cycle would automatically shift to different GMT timess, and you'd still have 90% chance of sunshine -- better than the real world!
However, night may be better suited to the non MA arenas anyway. Adding the limited ground radar, short range accurate fighter radar, true nightfighters, searchlights, etc would be a rush -- but probably unrealistic expectation in light of major work going on elsewhere.