User blog comment:Deyuaru/Servant x Human history Historical Calendar/@comment-11658422-20160425140838/@comment-27247829-20160505111447

And, pray tell, how am I going to do that? But considering that these type of works seems to run on 'all myths, histories, and such are true', while all this events might have happened in Nasuverse, it doesn't mean it's canon since there are only so little words from the creators about it. Basically, 'non-canon until we explicitly state/implied otherwise'; unless works like Garden of Avalon or other snippets of Servants' pasts have put their events into an official TM timeframe, it probably won't be noted. I was going to make a comparison with The Legend of Zelda timeline, but I'm not really familiar with it.

I am a bit amused that Servants from literary fictions are included in a 'History Calendar', though.