YOU SAID:

today was a good day i cleaned my room

INTO JAPANESE

今日は良い日だった私は部屋を掃除した

BACK INTO ENGLISH

Today was a good day and I cleaned the room.

INTO JAPANESE

今日は良い一日だったし、私は部屋を掃除しました。

BACK INTO ENGLISH

It was a good day today and I cleaned the room.

INTO JAPANESE

今日は良い日だったし、私は部屋を掃除した。

BACK INTO ENGLISH

It was a good day today and I cleaned the room.