Pluto Demoted Day is observed on August 24 of every year. The commemoration of the day began when Pluto’s status was demoted by the International Astronomical Union (IAU) from a full-sized planet to a dwarf planet. Pluto Demoted Day is memorialized to remember the discovery of this dwarf planet.
Read MorePluto Demoted Day – August 24, 2022, history, quotes
