Space to Ground Station Sleep 10_23_2015

https://rumble.com/v3twnad-space-to-ground-spring-time-is-launch-time-04-21-2017.html

The sleep patterns of astronauts aboard the International Space Station (ISS), it's important to note that their sleep schedules are carefully regulated. The ISS operates on Greenwich Mean Time (GMT) to help synchronize operations between the international crew and control centers around the world.

Astronauts on the ISS generally follow a schedule that includes 8.5 hours for sleep, 2 hours for exercise, and 1.5 hours for personal hygiene and other tasks. They use sleeping bags that are attached to the walls to keep them from floating around during sleep. The station's crew is also provided with eye masks and earplugs to help them adjust to the station's 90-minute light-dark cycle caused by its orbit around the Earth.

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