** Central Bank bombing: an explosives-filled truck rams into the gates of the Central Bank in Colombo, Sri Lanka, killing at least 86 and injuring 1, 400.

** Colombo Radio launches in Ceylon ; the station is subsequently known as Radio Ceylon.

** Realdo Colombo, Italian surgeon and anatomist ( b. 1516 )

** Old Parliament Building of Colombo

** Ramón Carnicer, Cristoforo Colombo ( 1831 )

** Luigi Bottesini, Cristoforo Colombo ( 1848 )

** Vincenzo Mela, Cristoforo Colombo ( 1857 )

** Felicita Casella, Cristoforo Colombo ( 1865 )

** University of Colombo, Colombo

** Colombo – Bandaranaike International Airport

** Colombo – Bandaranaike International Airport

** Thomas Jefferson's Plan for the University of Virginia: Lessons from the Lawn, a National Park Service Teaching with Historic Places ( TwHP ) lesson plan

** Freight Unit, which is currently developing the " London Freight Plan " and is involved with setting up and supporting a number of Freight Quality Partnerships covering key areas of London.

** President Harry Truman signs the Marshall Plan, which authorizes $ 5 billion in aid for 16 countries.

** The Holocaust: Franz Rademacher proposes the Madagascar Plan.

** Canada Pension Plan

** Quebec Pension Plan

** Registered Retirement Savings Plan

** Saskatchewan Pension Plan

** Dalton School, a private school in New York City founded by Helen Parkhurst based on the Dalton Plan

** North American Numbering Plan

** Marshall Scholarship, awarded to graduating American undergraduates by the British government, in commemoration of the Marshall Plan

** Plan for Destruction

** The Molotov Plan to aid the rebuilding of countries aligned to Soviet Union

** Cumbria and North Yorkshire-under protection in the UK Biodiversity Action Plan

** Medicare Plan Choices at Medicare. gov — basic information about plan choices for Medicare beneficiaries, including Medicare Advantage Plans

** Volumetrics Weight-Control Plan

** " Plan 10 from Inner Space " by Karl Edward Wagner

** Jeff Beck for " Plan B "

** Kaiser Foundation Health Plan, Inc. ( KFHP )

** Kaiser Foundation Health Plan, Inc. ( KFHP )

** Kaiser Foundation Health Plan of Colorado ( KFHPCO )

** Kaiser Foundation Health Plan of Georgia, Inc. ( KFHPGA )

** Kaiser Foundation Health Plan, Inc. ( KFHP )

** Kaiser Foundation Health Plan of the Mid-Atlantic States Inc. ( KFHPMA )

** Executive chairman – the chairman's post may also exist as an office separate from that of CEO, and it is considered an executive chairman if that titleholder wields influence over company operations, such as Steve Case of AOL Time Warner and Douglas Flint of HSBC.

** IMR-2M2-Improved version that is better suited for operations in dangerous situations, for example in contaminated areas.

** Permanent memory ( ROM )- The instructions for in-built functions ( arithmetic operations, square roots, percentages, trigonometry etc.

** Digital filter, a system that performs mathematical operations to reduce or enhance certain aspects of a signal

** for his profound contributions to three major areas of operations research and management science: inventory theory, dynamic programming and lattice programming.

** for his profound contributions to two major areas of operations research and management science: stochastic networks and mathematical finance.

** Panzer General, SSI ( 1994 ), video game ; strategic simulation game: Sea Lion ' 40 and Sea Lion Plus ( the latter with prestige points used to take over Gibraltar allowing Italian naval assistance ) scenarios are available given major victories in early operations, or the Sea Lion ' 43 after initial delays and later major victories in North Africa or Russia.

** In 1999, the North Atlantic Treaty Organization ( NATO ) led by the United States launched air attacks against Yugoslavia ( then composed of only Serbia and Montenegro ) to pressure the Yugoslav government to end its military operations against ethnic Albanian separatists in Kosovo due to accusations of war crimes being committed by Yugoslav military forces working alongside nationalist Serb paramilitary groups.

** Iraq disarmament crisis: Iraq refuses to allow UNSCOM inspectors to use its own aircraft to fly into Iraq, and begins military operations in the demilitarized zone between Iraq and Kuwait, and the northern Iraqi no-fly zones.

** Admiral Karl Dönitz orders all U-boats to cease offensive operations and return to their bases.

** W47NV begins operations in Nashville, Tennessee, becoming the first FM radio station.

** Disgruntled railroad workers effectively halt operations of the Pennsylvania Railroad, marking the first shutdown in the company's history ( the event lasts two days ).

** The Royal Flying Doctor Service of Australia commences operations.

** The KGB officially stops operations.

** Pan American World Airways ends operations.

** National Educational Television ends operations, being succeeded by PBS.

** The world's largest hydroelectric plant in Krasnoyarsk, Soviet Union, begins operations.

** Vietnam War: The Pentagon tells U. S. President Lyndon B. Johnson that if planned major sweep operations to neutralize Viet Cong forces during the next year are to succeed, the number of American troops in Vietnam will have to be increased from 120, 000 to 400, 000.

** The Reconstruction Finance Corporation begins operations in Washington, D. C.

** Air France begins operations with 250 planes.

** Maintenance, repair and operations

** Graph operations

** Operations ( military staff ), staff involved in planning operations

** Combined operations, operations by forces of two or more allied nations