The Global Financial Crisis (GFC) occurred during the period of extreme stress in global financial markets and banking systems from mid-2007 to early 2009. It was triggered by a downturn in the US housing market that began around mid-2006, with the financial stress becoming clearly visible around mid-2007 and culminating in major events like the bankruptcy of Lehman Brothers in September 2008. The official recession period in the US related to this crisis was December 2007 to June 2009, lasting about 18 to 19 months.