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

Other days

gum

Gum Day
ormille

Ormille Day
pumpkin

Pumpkin Day
my little pony

My Little Pony Day
youth

Youth Day
hot chocolate

Hot Chocolate Day
self care

Self Care Day
boy friend

Boy Friend Day
one

One Day
lisp

Lisp Day