Board Thread:General Discussion/@comment-28986801-20170212232334/@comment-679780-20170213040521

It's important to know that despite all belonging to the same franchise and sporting the blue hedgehog and his familiar friends, the games, cartoons and comics are entirely seperate canons from one another.

The "Canon" itself is the games. Sonic Generations is a good list of all games regarded as canon. Granted Sega may have rewritten the lore between the Classic era and Modern era (Such as only male hedgehogs can become Super with only Sonic 3&K being the acception). The technology in Sonic's world appears advance such as mass produce robot soldiers, floating advertisement and information monitors and such places as Future City and Monopole showing extremely advance futuristic technology, however it is mostly pressumed that Sonic games take place in present time (As in around the time the game was released.) While this isn't confirmed, Sega did relase DLCs for Sonic Adventure to celebrate Halloween, Christmas and New Year at the time.

As for the comics, well the pre-SGW timeline ended at 323-something. It restarted the universe with a brand new calender system so I am not entirely sure of the in-lore date of the comics. Keep in mind that while it does make more of an attempt to resemble canon, the comics are not accurate to the actual canon itself.

Then theres the cartoons. I don't recall calender dates mentioned through all the cartoons, I think Sonic X takes place in it's present time (2003-05) but will mention it on the articles if I ever find dates.