Oops, it doesn't look like 'monument on a day' is a national day..

Other days

bonang

Bonang Day

nae nae

Nae Nae Day

tulip

Tulip Day

nail polish

Nail Polish Day

healing

Healing Day

Emoji Day

stress awareness

Stress Awareness Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

cuddle up

Cuddle Up Day

gallery

Gallery Day