Is October reading week only 2 days? Can someone confirm this, seems like last year we had more days for reading week.

2 + Weekend. So 4 days in total. Yes that's how much we had last year as well.

All of the dates are available on the registrar's website, if you'd like to confirm these things yourself from a reputable source.
(Nothing against Nik, who has been very helpful on MI, but in general asking people online is not super reliable, and you should know where to find the info for yourself).

Yeah, I looked up the sessional dates myself before posting here. But I should have posted the link as well to make my response more reliable.

Here's the link for future reference! http://registrar.mcmaster.ca /sessional-dates/