Days Until World Sleep Day (reference)
Days until World Sleep Day (reference)
Observed the Friday before the Spring Equinox; date shifts each year.
About World Sleep Day (reference)
Observed the Friday before the Northern Hemisphere spring equinox, World Sleep Day was established in 2008 by the World Sleep Society, aiming to raise awareness of sleep disorders and the burden they place on individuals and society.
Each year's observance is organized around a specific theme related to sleep health, sleep medicine, or sleep disorder awareness, coordinated by sleep medicine professionals internationally.
Because it's pegged to the Friday before the spring equinox instead of a fixed calendar day, its date drifts by several days year to year — a genuinely floating observance despite lacking the lunar/lunisolar mechanics behind holidays like Easter or Diwali.
The World Sleep Society, which coordinates the observance, also separately publishes global sleep-quality survey data timed to the day, tracking self-reported sleep satisfaction across participating countries.
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