How much knowledge can be stored in 24 hours that could actually be remembered?

For some people, a lot.

For me it varies day to day. It is also hard to quantify. Studies have shown that after 6 hours of studying, the results have diminishing returns. It also depends on the method at which the learning comes at you. Some are auditory learners and others are visual learners.
Somedays my mind is like a steel trap, other days like a steel sieve.

There are a ton of factors that would make a difference. Age, physical, mental, emotional health, the individual’s capacity for learning, how we are “measuring” the amount of information being read and retained. It really depends.

I think it would be impossible really, to determine any specific number, any specific quantity here. As @ANef_is_Enuf points out, there are so many factors that would influence how much knowledge a person could “consume” and retain in any given 24 hour period. I would vary from person to person, and even with the same person it might vary from day to day. It would depend on they type of information, whether the knowledge needed to be retained in short term or long term memory, how quickly a person could “consume” information, what their powers of retention were, whether or not they were just memorizing facts, or were truly gaining “knowledge.”

I dunno. If it’s names—fuggedaboutit. They fly out of my head the second they are given me. But I’ll remember situations and relationships and stories. Or maybe not remember them, but I’ll have enough of the pattern I can make up the rest just like that. I remember information, not labels.

As for the amount I can remember in a day—I’d say eleventy four. International memory units, that is.

For me, it really depends both on how interesting the information is and how it is presented. Personally, I can remember a lot of things that I have seen, but if you recite a list orally, I will probably forget the first item by the time you say the third. Well, unless it’s something I have no interest in, in which case it will be forgotten within 7–10 seconds, if not ignored entirely.

From what I have seen of most people, it seems to be somewhat similar, but with a far different idea of “interesting”. I find it interesting to know how my technological toys and tools work and have no interest in pop culture or celebrity news whereas many people seem to know all about every series on TV but not how to hook that TV up.