YOU SAID:

I won't be here by Saturday

INTO JAPANESE

私は土曜日までにここにいません

BACK INTO ENGLISH

I am not here on Saturday

INTO JAPANESE

私はここで土曜日に

BACK INTO ENGLISH

I am here on Saturday

INTO JAPANESE

私はここで土曜日を午前します。

BACK INTO ENGLISH

I was here on Saturday, the morning.

INTO JAPANESE

私は土曜日、朝にここにあった。

BACK INTO ENGLISH

I was here Saturday, in the morning.

INTO JAPANESE

私は土曜日、午前中にここにいました

BACK INTO ENGLISH

I was here on Saturday, in the morning

INTO JAPANESE

私はここで、土曜日朝に

BACK INTO ENGLISH

I was here on a Saturday morning

INTO JAPANESE

私は土曜日の朝にここにあった

BACK INTO ENGLISH

I was here on a Saturday morning