G20 Summit By bonnieethai Nov 15, 1975 G6 Started Jun 15, 1995 G7 Started Jun 20, 1997 G8 Started Jun 18, 1999 G7 Cologne Summit Nov 14, 2008 First G20 Summit in Washington DC President George W. Bush invited the leaders of the G20 countries Apr 1, 2009 Second G20 Summit in London Sep 24, 2009 Third G20 Summit in Pittsburgh Jan 1, 2010 Meeting of the G20 leader's personal representatives in Mexico Jun 26, 2010 Fourth G20 Summit in Toronto Nov 11, 2010 Fifth G20 Summit in Seoul