Opening Day for Metrorail.
Gallery Place opens.
Its opening was delayed under court order for missing handicap access.
Red Line extended to Dupont Circle.
Blue Line opens from National Airport to Stadium-Armory.
Red Line opens to Silver Spring, inaugurating the first service to Maryland.
Orange Line opens to New Carrollton.
All trains run from National Airport to New Carrollton, signed Orange heading toward New Carrollton and Blue heading towards National Airport.
Orange Line extended to Ballston.
Orange and Blue are now two separate services.
Blue Line extended to Addison Road.
Orange and Blue run a strange service pattern (see notes below for more discussion).
Red Line extended to Van Ness.
Yellow Line opens from National Airport to Gallery Place.
Yellow Line extended to Huntington.
Red Line extended to Grosvenor.
Red Line extended to Shady Grove.
Orange Line extended to Vienna.
Gallery Place renamed Gallery Pl-Chinatown.
Red Line extended to Wheaton.
Navy Memorial opens; Archives station renamed Archives-Navy Mem'l.
Segment to U Street-Cardozo opens.
Service runs as Yellow Line temporarily.
Blue Line extended to Van Dorn Street.
Green Line formally opens from U Street to Anacostia.
Northern Green Line segment opens from Fort Totten to Greenbelt.
Blue Line extended to Franconia-Springfield.
Ballston renamed Ballston-MU.
Red Line extended to Glenmont.
Waterfront renamed Waterfront-SEU.
Inner Green Line segment opens from U Street to Fort Totten.
Woodley Park, U Street, West Falls Church, Dunn Loring, and Vienna get their current names.
Green Line extended to Branch Avenue.
The originally-planned system is now complete.
Addison Road renamed to Addison Road-Seat Pleasant.
New York Ave-Florida Ave/Gallaudet U infill station opens on the Red Line.
Mt. Vernon Sq., Rhode Island Ave., and National Airport get their current names.
Blue Line extended to Largo Town Center.
Yellow Line begins running off-peak to Fort Totten.
Music Center at Strathmore opens; Grosvenor station renamed to Grosvenor-Strathmore.
Two huge snowstorms force Metro to stop all above-ground service.
Our current (fair weather) service pattern.