Since there isn’t a lot of research into the benefits and risks of OMAD fasting specifically, it’s difficult to say what the best time to eat on OMAD is. Typically you don’t want to eat a large meal shortly before bed, so if you’re planning on having your meal at night, make sure you have a few hours to digest ahead of sleep. Likewise, if you’re someone who feels drowsy after a supersized meal, you may want to avoid eating in the middle of the day. Ultimately you want to find a window that works best for you and your schedule.