No.
If you are saying "I am happy," you would use ureshii, or if you are saying happiness, you would say "shiawase"
Joyeuse saint Valentin or "Bonne saint Valentin
Simply say "Happy Mother's Day."
happy birthday
You may say 'ureshii.'
Yukai Fi-to
Happy independence day?
happy name day
Happy Friendship Day.
In Japanese, they use the expression 'Merry Christmas,' which becomes 'merii kurisumasu' in Japanese.
happy fathers day