Did Christ (who IS God) choose not to know the time of His return? If so...it's existent. Enough said.
Unique situation though with Jesus here...
He came to earth and took on a Human nature to go along with His Divine One...
He chose to "limit" use of His Divine attributes, in order to experience temptations as a man, and did NOT ever Sin, and did thast by relying upon the Father and HS, as we all have to do...
the Father STILL knew the date and time of jesus return, so God still knew it...
Think Jesus also knows it now, as God gave Him back Full gloy at Ascension, granting Him "name above all other names" that being "Lord/Yahweh!"