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

Other days

promposal

Promposal Day
bonang

Bonang Day
self care

Self Care Day
pick me

Pick Me Day
tulip

Tulip Day
unicorn

Unicorn Day
stress awareness

Stress Awareness Day
boy friend

Boy Friend Day
brow

Brow Day
gum

Gum Day