Oops, it doesn't look like 'tower lit up in green to celebrate earth day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
bubble bath

Bubble Bath Day
offer

Offer Day
carpenters

Carpenters Day
lumpy rug

Lumpy Rug Day
ask out your crush

Ask Out Your Crush Day
bow tie

Bow Tie Day
ride the wind

Ride The Wind Day
nae nae

Nae Nae Day
unicorn

Unicorn Day