** Epochal moment, in astronomy, a reference for the orbital elements of a celestial body

** The latest possible date for Easter Sunday, last in 1943.

** Earliest date for Yule in the northern hemisphere, and Midsummer in the southern hemisphere.

** Year or date of death

** Effective date of Canada's first modern-day treaty – The Nisga ' a Final Agreement

** Ukrainian journalist Georgiy Gongadze is last seen alive ; this day is taken as the commemoration date of his death.

** IBM announces a $ 4. 97 billion loss for 1992, the largest single-year corporate loss in United States history to date.

** The Great Flood of 1951 reaches its highest point in Northeast Kansas, culminating in the greatest flood damage to date in the Midwestern United States.

** The worst coal dust explosion to date, in Honkeiko, China, claims 1, 549 lives.

** James Joyce walks to Ringsend with Nora Barnacle ; he later uses this date ( Bloomsday ) as the setting for his novel Ulysses.

** The Pennsylvania Railroad and the New York Central Railroad merge to form Penn Central, the largest ever corporate merger up to this date.

** Agreement for merger between the General Electric Company and English Electric, the largest industrial merger in the UK up to this date.

** The Rolling Stones Rock and Roll Circus is also filmed on this date, but not released until 1996.

** Cultivars of plants named after this date must be named in a modern language, not in Latin.

** Apollo 17 ( Gene Cernan, Ronald Evans, Harrison Schmitt ), the last manned Moon mission to date, is launched.

** An unexpected storm buries Maine under five feet of snow, forcing the Bangor Daily News to miss a publication date for the only time in history.

** Penn Central declares Section 77 bankruptcy, largest ever US corporate bankruptcy up to this date.

** Francoist Spain executes five ETA and FRAP members, the last executions in Spain to date.

** A blowout at the Ixtoc I oil well in the southern Gulf of Mexico causes at least 600, 000 tons ( 176, 400, 000 gallons ) of oil to be spilled into the waters, the worst oil spill to date.

** Indianapolis 500: In what Indianapolis Motor Speedway historian Donald Davidson and Speedway public address announcer Tom Carnegie later call the greatest moment in the track's history, 1973 winner Gordon Johncock wins his second race over 1979 winner Rick Mears by 0. 16 seconds, the closest finish to that date, after Mears draws alongside Johncock with a lap remaining, after erasing a seemingly insurmountable advantage of more than 11 seconds in the final 10 laps.

** On this date, the first condom was made by the International Condom Company ( ICC ).

** ( Inca date unknown ) – Inca Garcilaso de la Vega

** Jan van Eyck, Flemish painter ( approximate date ; died 1441 )

** The Envisat environmental satellite successfully reaches an orbit 800 km above the Earth using an Ariane 5 on its 11th launch, carrying the heaviest payload to date at 8, 500 kg.

** The rotor drive train in helicopters uses a freewheeling clutch to disengage the rotors from the engine in the event of engine failure, allowing the craft to safely descend by autorotation.

** Hunter hack, a horse show event

** Burmese Lethwei, a traditional Burmese martial art of which has now grown into a popular kickboxing event with strong emphasis on knee, elbow strikes and headbutt.

** USA Cycling canceled the BMC Software Tour of Houston scheduled for September 16, which was a key event in that year's Pro Cycling Tour, involving elite domestic and international cyclists.

** In the UK, a protective trust is a life interest which terminates on the happening of a specified event such as the bankruptcy of the beneficiary or any attempt by him to dispose of his interest.

** The Big Ear, a radio telescope operated by Ohio State University as part of the SETI project, receives a radio signal from deep space ; the event is named the " WOW!

** One million men gather for Promise Keepers ' " Stand in the Gap " event in Washington, DC.

** The first Ten Tors event is held in Dartmoor.

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

** Bob Hope and other entertainers gather in Washington, D. C. for Honor America Day, a nonpartisan holiday event.

** The Human Be-In takes place in Golden Gate Park, San Francisco ; the event sets the stage for the Summer of Love.

** The-long freighter SS Edmund Fitzgerald sinks during a storm from the entrance to Whitefish Bay on Lake Superior, killing all 29 crew on board ( an event immortalized in song by Gordon Lightfoot ).

** Start the initialization of event triggers.

** Windsor Free Festival, event held in nearby Windsor Great Park

** ExtendSim simulation environment for discrete event, continuous, discrete-rate and agent-based simulation.

** Simio software for discrete event, continuous, and agent-based simulation.

** AnyLogic multi-method simulation tool, which supports System dynamics, Discrete event simulation, Agent-based modeling

** VHDL-AMS-Continuous conservative / signal flow discreent event and Register transfer level capability.

** Verilog-AMS-Continuous conservative / signal flow discreent event and Register transfer level capability.

** Simulink-Continuous and discrete event capability

** Scicos-Continuous-time, discrete-time and event based simulation tool distributed with ScicosLab.

** Flexsim-3D process simulation software for continuous, discrete event, or agent-based systems.

** EICASLAB-Continuous, discrete and discrete event capability specifically devoted to support the automatic control design.

** ExtendSim simulation environment for discrete event, continuous, discrete-rate and agent-based simulation.