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

Other days

ask out your crush

Ask Out Your Crush Day
aloxolt

Aloxolt Day
youth

Youth Day
bow tie

Bow Tie Day
offer

Offer Day
nail polish

Nail Polish Day
book

Book Day
bounce

Bounce Day
lumpy rug

Lumpy Rug Day
camera

Camera Day