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

Other days

singles

Singles Day
law

Law Day
tulip

Tulip Day
lumpy rug

Lumpy Rug Day
eat what you want

Eat What You Want Day
latina equal pay

Latina Equal Pay Day
frozen yogurt

Frozen Yogurt Day
artists

Artists Day
ruby

Ruby Day
unicorn

Unicorn Day