YOU SAID:
Mary had a merry day today
INTO JAPANESE
メアリーは今日陽気な一日を過ごした
BACK INTO ENGLISH
Mary had a merry day today.
INTO JAPANESE
メアリーは今日陽気な一日を過ごした。
BACK INTO ENGLISH
Mary had a merry day today.
That didn't even make that much sense in English.