June 20 vs June 21: Solstices (& Equinoxes) annually migrate 6-hrs later, until a Leap Year, when they reset 24-hrs earlier.— Neil deGrasse Tyson (@neiltyson) June 20, 2016
June 20 vs June 21: Solstices (& Equinoxes) annually migrate 6-hrs later, until a Leap Year, when they reset 24-hrs earlier.