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I'm going to start a Stargate marathon where I watch all of SG-1 and Atlantis. I know the 2 series take place roughly in the same timeframe but I am wondering at what points in SG-1 do each seasons of Atlantis takes place.
While I am only asking about when each season of Atlantis takes place in regards to SG-1 if there are key mid-season moments in Atlantis that should be seen before a particular point in SG-1 (ie. the Replicators beginning their attack on the Wraith) then I am interested in these as well.