YOU SAID:
So I was taking a walk the over day
INTO JAPANESE
だから私は一日中散歩していた
BACK INTO ENGLISH
So I was walking all day
INTO JAPANESE
だから一日中歩いていた
BACK INTO ENGLISH
So I walked all day
INTO JAPANESE
だから一日中歩いた
BACK INTO ENGLISH
So I walked all day
That didn't even make that much sense in English.