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

Other days

carpenters

Carpenters Day
boba

Boba Day
me

Me Day
tell a fairytale

Tell A Fairytale Day
believe

Believe Day
azonto is acceptable

Azonto Is Acceptable Day
self care

Self Care Day
promposal

Promposal Day
self appreciation

Self Appreciation Day
tell ur crush you like them

Tell Ur Crush You Like Them Day