Originally posted by DemonicGambit-2
Well technically if you want to find out a character's age, you can't really just go by when they first appeared. Because of two reasons. 1) Some comics are based during different eras but come out at the same time 2) Each comic isn't going by our time, then otherwise all the X-Men would be in their 70s, at the very least
Well, you can tell whether the comics are going by our time or not quite easily. All you have to do is to look at the references to historical events and pop culture references that appear in the comics.
For Example, there was a spiderman comic based around 9/11, so that proves that that was the date then.