YOU SAID:

I like to eat pizza on sunny days only.

INTO JAPANESE

私は晴れた日だけピザを食べるのが好きです。

BACK INTO ENGLISH

I like to eat pizza only on sunny days.

INTO JAPANESE

私は晴れた日にだけピザを食べるのが好きです。

BACK INTO ENGLISH

I like to eat pizza only on sunny days.