User blog comment:Garhdo/How long was the Reaper War?/@comment-4953843-20130830203617

factor in events from retribution and deception (hey now, there's still hope) and it's highly plausible reaper war ends sometime in 2187. might as well imagine the reapers rolled in by christmas.
 * jon grissom dies 2186. six months later, retribution. "a few months after that", deception. then ME3.

most ME3 events measure time by "weeks".
 * after thessia joker says tiptree overrun by reapers "two weeks ago"
 * aeian t'goni lounging around the hospital as early as... well palaven. events possibly handwaveable that she faced an "advance force" and those reapers joker mentions are just the big guns incoming.
 * t'goni on active duty for at least "3 weeks" (not all of those weeks may have been spent killing husks)
 * during debrief with hackett after citadel 2 (concerning gerrel and quarians) shep mentions losing earth only "a few weeks back"
 * shep talking to tali on earth: time measurement switches to "months"