June 16 is Valentina’s Day. Hashtag: #ValentinasDay
On June 16 1963, Valentina Tereshkova, a 26-year-old cosmonaut from Russia became the first woman in space
Wikipedia: Valentina Vladimirovna Tereshkova (Russian: Валентина Владимировна Терешкова, born March 6, 1937) is a member of the Russian State Duma, engineer, and former cosmonaut. She is the first and youngest woman to have flown in space with a solo mission on the Vostok 6 on June 16, 1963. She orbited the Earth 48 times, spent almost three days in space, and remains the only woman to have been on a solo space mission.
Maiden Voyage: The First Woman in Space
By the way, using my Dr Space Junk powers, I'm declaring June 16th Valentina's Day. Let's make some stuff happen! #ValentinasDay
— Alice Gorman (@drspacejunk) January 19, 2020
— John Borghi (@JohnBorghi) June 16, 2015