I think the base circadian day time is about 25 hours, or 24 hours 11 minutes, or similar [1]. I've always wondered what would happen to the sleep cycles of as

I think the base circadian day time is about 25 hours, or 24 hours 11 minutes, or similar [1]. I've always wondered what would happen to the sleep cycles of astronauts on long space journeys. They may not have "daylight" to regulate their rhythms. [1] https://news.harvard.edu/gazette/story/1999/07/human-biological-clock-set-back-an-hour/ https://news.harvard.edu/gazette/story/1999/07/human-biologi...