I've asked this question too, cause I live near the equator and got curious about those estimated flowering times they put on brand seeds. I asked this d00d that mods over the sensi forum, if that estimation could be applied to where I live, or if it was strictly for northern growers (states or europe). For what I recall, depending on where you live, those estimations mean shit. You gotta plan ahead, by knowing how seasons and the sun changes around your growing area.
My plants are barely flowering by now, I'll be harvesting in december, or november at the soonest.