→ World Post Day

• 1410 – The first known mention of the Prague astronomical clock.

• 1446 – The hangul alphabet is published in Korea.

• 1582 – Because of the implementation of the Gregorian calendar, this day does not exist in this year in Italy, Poland, Portugal and Spain.

• 1604 – Supernova 1604, the most recent supernova to be observed in the Milky Way.

• 1824 – Slavery is abolished in Costa Rica.

• 1847 – Slavery is abolished in Saint Barthélemy and all remaining slaves are freed.

• 1900 – Birth Day Of Joseph Friedman, American inventor, invented the bendy straw (Death On 1982)

• 1988 – Death Date Of Felix Wankel, German engineer, invented the Wankel engine (Birth On 1902)

• 2009 – First lunar impact of the Centaur and LCROSS spacecrafts as part of NASA's Lunar Precursor Robotic Program.