Translation of "8th" in Hungarian

I got my start in this in 8th grade

Ebbe nyolcadikos koromban fogtam bele,

- School begins on April 8.
- School starts April 8th.
- School begins on the eighth of April.
- School begins on the April 8th.

Az iskola április nyolcadikán kezdődik.

Mary has been in love with Tom since the 8th grade.

Maria már nyolcadikos kora óta szerelmes Tomba.

By the way, today is the 8th of June — my wife's birthday.

Amúgy ma június 8-a van, a feleségem szülinapja.