YOU SAID:
It is my mom's birthday
INTO JAPANESE
それは私のお母さんの誕生日
BACK INTO ENGLISH
It's my mom's birthday
INTO JAPANESE
ママの 誕生日よ
BACK INTO ENGLISH
MOM's birthday!
INTO JAPANESE
お母さんの誕生日よ
BACK INTO ENGLISH
MOM's birthday!
That didn't even make that much sense in English.