YOU SAID:
hello do you have a good day
INTO JAPANESE
こんにちは、良い一日ですか
BACK INTO ENGLISH
Hello, Is a good day
INTO JAPANESE
こんにちは、良い日です
BACK INTO ENGLISH
Hello, it is a good day
INTO JAPANESE
こんにちは、いい日です
BACK INTO ENGLISH
Hello, it is a good day
That didn't even make that much sense in English.