美联社汇编的7月30日历史事件中，2012年这一天发生了迄今规模最大的停电事故。[1]三个印度电网级联故障导致6.2亿人停电，是世界最大规模停电事件。[1]
7月30日在历史上还记录了其他多个重要事件。[1]1976年，詹娜（当时名为Bruce Jenner）在蒙特利尔夏季奥运会十项全能比赛中赢得金牌并创造世界纪录。[1]1930年，乌拉圭队以4比2击败阿根廷队，赢得首届国际足联世界杯冠军。[1]1945年，美国海军波特兰级重巡洋舰印第安纳波利斯号在递送原子弹部件后遭日本潜艇鱼雷袭击，1200人中仅有316人生存。[1]1965年，林登·约翰逊总统签署《1965年社会保障修正案》，促成医疗保险和医疗补助制度的建立。[1]
The Associated Press compiled significant historical events that occurred on July 30th across different years, spanning from the colonial era to the modern age.[1]
Among the most impactful incidents was a massive power outage in India in 2012, when cascading grid failures left 620 million people without electricity, marking the world's largest blackout event.[1] Another tragedy occurred in 2016 when a hot air balloon caught fire and crashed near Lockhart, Texas after making contact with high-voltage power lines, resulting in 16 deaths.[1]
Several pivotal political and social milestones also occurred on this date throughout American history. President Dwight D. Eisenhower signed an executive order on July 30, 1956, designating "In God We Trust" as the national motto.[1] Nine years later, President Lyndon B. Johnson signed the Social Security Amendment of 1965, which led to the creation of Medicare and Medicaid programs.[1] Meanwhile, the first representative assembly in colonial America convened in Jamestown, Virginia on July 30, 1619.[1]
Sports and military history are similarly marked by July 30th events: Jenner (then known as Bruce Jenner) won the gold medal in the decathlon at the 1976 Summer Olympics in Montreal while setting a world record,[1] and Uruguay won the inaugural FIFA World Cup on July 30, 1930, defeating Argentina 4–2.[1] In a darker chapter, the USS Indianapolis, a Portland-class heavy cruiser, was torpedoed by a Japanese submarine on July 30, 1945, after delivering atomic bomb components; of 1,200 crew members, only 316 survived.[1] Additionally, former Bosnian Serb leader Radovan Karadzic was extradited to The Hague on July 30, 2008, to face genocide charges after 13 years in hiding.[1]