Once every four years, as February gets a 29th day, women can drop down on one knee and propose to their partner, according to tradition. Though the world has evolved past the days of such antiquated traditions, they are still observed in some parts of the world. Modern celebrations also take inspiration from such holidays, modernizing them to contemporary attitudes. What is Bachelor’s Day?In Irish tradition, Bachelor’s Day falls every four years on February 29. It was the one day when it was socially acceptable for a woman to propose to a man. It was also called Ladies’ Privilege in some circ…