Bach usually led performances of his cantatas, most of which were composed within three years of his relocation to Leipzig. The first was Die Elenden sollen essen, BWV 75, performed in the Nikolaikirche on 30 May 1723, the first Sunday after Trinity. Bach collected his cantatas in annual cycles. Five are mentioned in obituaries, three are extant.
Wilbur died, at age 45, at the Wright family home on May 30.
At the 30 May elections, voters were presented with a single list from the National Front, which officially won 89.2% of the vote; within the National Front list, the Communists had an absolute majority of 214 seats (160 for the main party and 54 for the Slovak branch). This majority grew even larger when the Social Democrats merged with the Communists later in the year.
The 1972–73 season was concluded with another league championship victory and a third successive European Cup with a 1–0 win over Juventus in the final
The 1984 European Cup Final was an association football match between Liverpool of England and Roma of Italy on 30 May 1984 at the Stadio Olimpico, Rome, Italy. It was the final match of the 1983–84 season of Europe's premier cup competition, the European Cup. Liverpool were appearing in their fourth final, having won the competition in 1977, 1978 and 1981. Roma were appearing in their first European Cup final.
The blame for the incident was laid on the fans of Liverpool FC. On 30 May official UEFA observer Gunter Schneider said, "Only the English fans were responsible. Of that there is no doubt." UEFA, the organiser of the event, the owners of Heysel Stadium and the Belgian police were investigated for culpability. After an 18-month investigation, the dossier of top Belgian judge Marina Coppieters was finally published. It concluded that blame should rest solely with the English fans.
On May 30, 1989, Gorbachev proposed that nationwide local elections, scheduled for November 1989, be postponed until early 1990 because there were still no laws governing the conduct of such elections. This was seen by some as a concession to local Party officials, who feared they would be swept from power in a wave of anti-establishment sentiment.
On 30 May 1990, the new Croatian Parliament held its first session.
In the 1990–91 season, Jordan won his second MVP award after averaging 31.5 ppg on 53.9% shooting, 6.0 rpg, and 5.5 apg for the regular season. The Bulls finished in first place in their division for the first time in 16 years and set a franchise record with 61 wins in the regular season.
On 30 May 2005, Merkel won the CDU/CSU nomination as challenger to Chancellor Gerhard Schröder of the SPD in the 2005 national elections.
On May 30, 2015, Biden's son, Beau Biden, died at age 46 after having battled brain cancer for several years. In a statement, the Vice President's office said, "The entire Biden family is saddened beyond words." The nature and seriousness of the illness had not been previously disclosed to the public, and Biden had quietly reduced his public schedule in order to spend more time with his son. At the time of his death, Beau Biden had been widely seen as the frontrunner to be the Democratic nominee for Governor of Delaware in 2016.
The science organization IEEE had initially banned Huawei employees from peer-reviewing papers or handling papers as editors on May 30th 2019, citing legal concerns.