25 or 6 to 4 explained by Chicago.

Cecil's Columns/Staff Reports
1

Here is the original article on the Dope.

I guess it has already been explained years ago, but here is a recent video confirming it means “25…or 26 to 4 AM”, a time.

Here is the video.

Not sure if that contains any new info., but there it is anyway.

2

I love Chicago! I had heard that explanation before, interesting.

3

Two previous threads on this subject suggest that this won’t be the end of this conversation. :smiley:
Apparently the song’s creator isn’t a good enough authority for some.