The lens flare almost makes this picture look like it might have been taken on Tattooine - except there's too much foliage...

Yuri's Day, April 12, is one of the L5 National Holidays. It celebrates Yuri Gagarin's first human orbital spaceflight of the Earth on April 12, 1961. April 12, 1981 was also the first flight of NASA's Space Shuttle. Yuri's Night is "the world space party" celebrated across the globe - and into space. See https://yurisnight.net/ for more information.

https://l5nation.com/supt/holidays.php