Alles Gute zum Muttertag! <3
"Happy Saint Patrick´s Day" in German is: Fröhlichen St. Patricks Tag
Schoenen Vater Tag
Herzliche Grüsse zum Valentinstag
Alles Gute zum President's Day n.B. President's Day is a US celebration, it has no German equivalent and to translate it would not make sense.
Assuming you mean "how" to say happy in German, there are a couple of different ways: Froh and gluecklich.
Fröhlichen vierten Juli! or Fröhlichen Unabhängigkeitstag (=independence day)
You could say "Alles Gute zum Valentinstag".
Happy Friday in German is glücklicher Freitag
Herzlichen Glückwunsch zum Muttertag is the translation in German. It is translated from English to German. German is mostly spoken in the European countries.
happy - glücklich Also fröhlich, froh
haben sie einen wundervollen vatertag
Simply say "Happy Mother's Day."