Oops, it doesn't look like 'meryl streep day' is a national day..

Other days

unicorn

Unicorn Day
latina equal pay

Latina Equal Pay Day
aloxolt

Aloxolt Day
first love

First Love Day
carpenters

Carpenters Day
tulip

Tulip Day
boy friend

Boy Friend Day
buddy

Buddy Day
self care

Self Care Day
law

Law Day