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

Other days

unicorn

Unicorn Day
ask out your crush

Ask Out Your Crush Day
blanket fort

Blanket Fort Day
gum

Gum Day
bow tie

Bow Tie Day
law

Law Day
girl friend

Girl Friend Day
one

One Day
offer

Offer Day
fiancee

Fiancee Day