Because of the federal government shutdown, some pages on NIFC.gov are not being updated and the agency will not be able to respond to inquiries until appropriations are enacted. For more information please visit: www.doi.gov/shutdown
Longest duration at PL 1: 275 days from October 7, 2008 to July 8, 2009.
5-year average number of days per year at PL 1: 183.
10-year average number of days per year at PL 1: 203.