October 20 in History
About Dave Biography Resume Hobbies & Interests Amateur Radio Amusement Parks Aquariums Christianity Computers Genealogy Geocaching Lego Lighthouses Pipe Organs Police Scanner Traffic Signals Trains (real & model) Misc Christmas @ Dave's Info about DTV Nautical Space and Astronomy Today in History Weather		October 20, 1973 (46 years ago) •The Sydney Opera House opens. October 20, 1984 (35 years ago) •The Monterey Bay Aquarium opens in Monterey Bay, California.