Might be a fun exercise...
Past: 1906 San Francisco earthquake, WW1, stock market crash of 1929, Pearl Harbor, German invasion of the Soviet Union in WW2, successful Trinity atom bomb test, Sino-Soviet split, legalization of abortion & the birth control pill, assassination of JFK, Rosa Parks, invention of the microprocessor, breakup of the Soviet Union, invention of the WWW, September 11.
Future: nuclear winter, breakup of the United States, Russian invasion of Eastern Europe, a paradigm-changing physics or cosmology discovery, hyperinflation in the developed world, discovery of an advanced civilization beneath the surface of Mars, the ability to reverse aging, development of strong AI and resulting rise of an AI consciousness, political instability in the Middle East that leads to the detonation of a nuke in Jerusalem.
