YOU SAID:

assume fork did not at 8am

INTO JAPANESE

フォークは午前8時には来なかったとする。

BACK INTO ENGLISH

Suppose the fork didn't come at 8 a.m.

INTO JAPANESE

フォークが午前８時に来なかったとします。

BACK INTO ENGLISH

Suppose the fork didn't come at eight in the morning.

INTO JAPANESE

フォークが朝８時に来なかったとします。

BACK INTO ENGLISH

Suppose the fork didn't come at eight in the morning.