"Effective Friday, March 15, 2013, the National Archives will reduce
public hours at two locations in the Washington, DC, area as part of
actions it is taking due to sequestration. These reductions will affect
exhibit spaces and research rooms at the National Archives Building in
Washington, DC, and research rooms at the National Archives at College
Park, Maryland. . . .
"Research rooms at the National Archives Building in Washington, DC, and
the National Archives at College Park, Maryland, are normally open to
researchers six days a week from 9 a.m. to 5 p.m., with extended hours
from 5 p.m. to 9 p.m. three days a week (Wednesday, Thursday, and
Friday). We will no longer offer these extended hours."
More.
Hat tip: David Schnitzer