YOU SAID:

It is long past my bedtime.

INTO JAPANESE

それは私の就寝時間を過ぎています。

BACK INTO ENGLISH

It's past my bedtime.

INTO JAPANESE

就寝時間を過ぎています。

BACK INTO ENGLISH

The bedtime is over.

INTO JAPANESE

就寝時間は終わりました。

BACK INTO ENGLISH

The bedtime is over.