Today

March 21 is, among other things:

• World Poetry Day


• the International Day for the Elimination of Racial Discrimination


• Norouz (in some communities)


• the original date of Earth Day


• the birthday of J.S. Bach, Modest Mussorgsky, and Son House, among others


• in 1800, the day on which Pius VII was crowned Pope in Venice with a temporary papal tiara made of papier-mâché


• World Sleep Day


• in some years, the vernal equinox and the first day of spring

More here.