Astronauts on the Space Station do a full circle of Earth every 90 minutes and experience 16 sunsets and sunrises every day. With this unearthly routine, astronauts can struggle to find a natural daily rhythm in space.
The Space Station follows Greenwich Mean Time (GMT), which helps keep a consistent schedule, along with regular wake-up and bedtime routines.
Many astronauts have difficulty adjusting to sleeping in space. Instead of lying down, astronauts float in a sleeping bag strapped to the wall of their sleeping quarters.
Discover more about Andreas sleeping routine in this video.