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

Other days

camera

Camera Day
my little pony

My Little Pony Day
cuddle up

Cuddle Up Day
cursing

Cursing Day
bounce

Bounce Day
raise awerness of zeus

Raise Awerness Of Zeus Day
tulip

Tulip Day
aloxolt

Aloxolt Day
boba

Boba Day
lisp

Lisp Day