The weight of scholarship in the referred posts are against your opinion, Biblicist.
Here it is again, not what I say, but what your, scholars had to say,
Barnes - ‘opse’ in Mark 13:35 … ~At even, or at midnight~
The Biblicist said: ↑
A..T. Robertson - (οψε), midnight (μεσονυκτιον), cock-crowing (αλεκτοροφωνιας), morning (πρω).
‘opse’ in Mark 13:35 … ~evening (οψε), midnight (μεσονυκτιον)~
JFB - ‘opse’ in Mark 13:35 …
John Gill - ‘opse’ in Mark 13:35 … ~at even, or at midnight~
John MacArthur - ‘opse’ in Mark 13:35 … ~…watches of the night from 6:00 p.m. to 6 a.m. Their names identify the ends of the three-hour periods rather than the periods beginnigs.~
Now I, GE, could have gone on and on listing commentaries, Biblical background authors who all say the very same thing. In fact, it is very very difficult to find any New Testament scholar that says otherwise, ~authors who all say the very same thing~ ‘opse’ in Mark 13:35 …‘LATE in day’!
Note one of these commentators support your theory of a four part 24 hour day and to quote snips of them out of context is dishonest. Here is what they really say in context:
Barnes - "At even, or at midnight or, at etc.: This refers to the four divisions into which the Jews divided the night. "
A.T. Robertson - "The four watches of the night are named here: evening (οψε), midnight (μεσονυκτιον), cock-crowing (αλεκτοροφωνιας), morning (πρω). "
JFB - "35. Watch ye therefore; for ye know not when the master of the house cometh, at even, or at midnight, or at the cock-crowing, or in the morning — an allusion to the four Roman watches of the night."
John Gill - "at even, or at midnight, or at the cock crowing, or in the morning. This is agreeably to the division of the night among the Jews, who speak of the first watch, the middle of the night, the cock crowing, and morning, as distinct from each other.
John MacArthur - "The normal expressions designating the four three-hour watches of the night from 6:00 p.m. to 6:00 am."
Why stoop to dishonesty?