meaning in context - understanding the 'timeline' phrases

I read one sentence today

1. We are having a party a week from coming Saturday.

So if we suppose that Saturday is 8 November 2014, then what date are they having the party in the above sentence ? (Is it the next Saturday?)

And while you are at it - if you could please also explain how to know

1. a month / a year from now or a month from next Tuesday etc.