TIL the Passemant astronomical clock in Versailles has shown the correct date, time, moon phase, planetary alignment, etc (accounting for leap years ) from 1750 and can display through 9999. en.chateauversailles.fr Submitted by kitkatbloo t3_z1r4ps on November 22, 2022 at 11:23 AM in todayilearned 34 comments 2,169