YOU SAID:
きのう 12じ に うち へ かえりました
INTO JAPANESE
きのう 12じ に うち へ かえりました
BACK INTO ENGLISH
I got home at 12 o'clock yesterday.
INTO JAPANESE
昨日は12時に家に帰りました。
BACK INTO ENGLISH
I got home at 12 o'clock yesterday.
That didn't even make that much sense in English.