Observed on the September Equinox
Circadian Rhythm Day
Half light. Half dark. All biology.
About Circadian Rhythm Day
What is Circadian Rhythm Day?
Circadian Rhythm Day is a public-awareness day dedicated to the human body clock and the powerful role of light, darkness, sleep timing, and daily routine in health, safety, learning, and performance.
The September Equinox is the perfect symbol: half light, half dark, all biology.
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