 
 <translate> Q: Passage: The second season of the American television medical drama Grey's Anatomy commenced airing on the American Broadcasting Company (ABC) on September 25, 2005, and concluded on May 15, 2006. The season was produced by Touchstone Television, in association with Shondaland production company and The Mark Gordon Company, the showrunner being Shonda Rhimes. Actors Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, and T.R. Knight reprised their roles as surgical interns Meredith Grey, Cristina Yang, Izzie Stevens, Alex Karev, and George O'Malley, respectively. Previous main cast members Chandra Wilson, James Pickens, Jr., Isaiah Washington, and Patrick Dempsey also returned, while Kate Walsh, who began the season in a recurring capacity, was promoted to series regular status, after appearing in seven episodes as a guest star.

Question: Based on this passage, when did season 2 of greys anatomy air?
Let's give stream of consciousness below
 <ibo> Ajụjụ: Oge nke abụọ nke ihe nkiri ahụike nke American Grey's Anatomy malitere na American Broadcasting Company (ABC) na Septemba 25, 2005, wee mechie na Mee 15, 2006. Touchstone Television mepụtara oge ahụ, na mmekorita ya na ụlọ ọrụ mmepụta ihe Shondaland na The Mark Gordon Company, onye na-eme ihe ngosi bụ Shonda Rhimes. Ndị na-eme ihe nkiri Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, na T.R. Knight weghachiri ọrụ ha dị ka ndị na-agwọ ọrịa na-agwọ ọrịa Meredith Grey, Cristina Yang, Izzie Stevens, Alex Karev, na George O'Malley, n'otu n'otu. Ndị otu ndị isi nke mbụ bụ Chandra Wilson, James Pickens, Jr., Isaiah Washington, na Patrick Dempsey laghachikwara, ebe Kate Walsh, onye bidoro oge a na-eme ugboro ugboro, e buliri ya n'ọkwa nke usoro mgbe niile, mgbe ọ pụtara na usoro asaa dị ka kpakpando ọbịa.  Ajụjụ: Dabere n'ihe a e kwuru ebe a, olee mgbe a malitere ime ihe nkiri Grey's Anatomy nke abụọ? Ka anyị nye stream nke nsụhọ n'okpuru 