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- Season 0 1966-12-25
- Season 1 1964-02-04
- Season 2 1965-01-06
- Season 3 1966-01-02
- Season 4 1967-01-17
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- Season 6 1969-01-02
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- Season 34 1997-02-27
- Season 35 1998-02-19
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- Season 57 2020-01-16
- Season 58 2021-01-04
- Season 59 2022-03-31
- Season 60 2024-07-22
Horizon - Season 59 Episode 1 How to Sleep Well with Michael Mosley
7.40 60 minutes As more people than ever report struggling with their sleep, Michael Mosley uses the latest science to explore how this impacts our health and what can be done to improve our sleep.
