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

Other days

frozen yogurt

Frozen Yogurt Day
hiv awareness

Hiv Awareness Day
eat what you want

Eat What You Want Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
polyamory

Polyamory Day
emoji

Emoji Day
youth

Youth Day
ask out your crush

Ask Out Your Crush Day
boy friend

Boy Friend Day
appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day