When the lights go down, the universe puts on a show. International Dark Sky Week, celebrated each April, invites everyone to rediscover the night and learn why darkness is worth protecting. Launched in 2003, the week highlights how excessive artificial light affects wildlife, human health, energy use and our ability to see the stars. Fewer lights don"t mean less safety—smart, well-designed lighting can do both.
International Dark Sky Week
Today in History
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A pair of high achievers
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Big rocks, big heads, still counting?
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Bavarian Forest National Park, Germany
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World Dolphin Day
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An iridescent view
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Scotts Bluff National Monument, Gering, Nebraska, United States
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Canadian Grand Prix 2025
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Pacific Rim Whale Festival
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Cala Luna beach, Sardinia, Italy
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Vancouver International Boat Show
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National Napping Day
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Manarola, Cinque Terre National Park, Liguria, Italy
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Vancouver Coastal Sea wolves in the Great Bear Rainforest
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An underwater paradise to explore
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Incan ingenuity
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Zion National Park, Utah, United States
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Castle Square, Old Town, Warsaw, Poland
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International Literacy Day
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Clark Range, Yosemite National Park, California, United States
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Golden cliffs of deep space
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Plum blossoms, China
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International Dark Sky Week
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National Indigenous Peoples Day
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Town of Pienza in Tuscany, Italy
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A butterfly’s best friend
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Flooded crypt, Basilica of San Francesco, Ravenna, Italy
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History awaits atop the hill
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World Pizza Day
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Bản Giốc – Detian Falls, Vietnam
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World Rainforest Day
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