About the day » Thursday April 21, 1977Calender converter

• Marieke Goossens
• Benjamin Michael Jacob Wubs, Stadskanaal
• Jan Roselle, Brugge († 1977)
• Darius Winston Ebanks († 2012)

• Albert van der Hoeven (18), Vianen
• Anna Caroline Stuht Osborn [sWks] "Ann" (91), Sidney, Cheyenne County, Nebraska
• Anna Maria Johanna Lambregts (42), Vancouver, Brits-Columbia
• Adalberto Tontini (65), Appignano (MC)
• Aafje Portegies (69), Wervershoof
• Anna van Beelen (81), Katwijk
• Aaltje ten Hoeven (75), Woerden
• Johannes de Jong (71), Steenbergen
• Anna Elisabeth Bergs (70), Sittard (Sittard-Geleen), Limburg, Nederland
• Antonius Wilhelmus Gal (80), Dieren

• 1975 » Danyon Loader, New Zealand swimmer
• 1976 » Petero Civoniceva, Fijian-Australian rugby league player
• 1976 » Rommel Adducul, Filipino basketball player
• 1977 » Gyula Koi, Hungarian scholar and educator
• 1977 » Jamie Salé, Canadian figure skater
• 1978 » Jacob Burns, Australian footballer
• 1978 » Jukka Nevalainen, Finnish drummer
• 1978 » Yuliya Pechonkina, Russian hurdler
• 1979 » Tobias Linderoth, French-Swedish footballer and coach
• 1979 » Virginie Basselot, French chef

• 1971 » François Duvalier, Haitian physician and politician, 40th President of Haiti (b. 1907)
• 1973 » Arthur Fadden, Australian accountant and politician, 13th Prime Minister of Australia (b. 1894)
• 1973 » Kemal Tahir, Turkish journalist and author (b. 1910)
• 1974 » Chic Harley, American football player (b. 1894)
• 1977 » Gummo Marx, American vaudevillian and talent agent (b. 1893)
• 1978 » Sandy Denny, English singer-songwriter (b.1947)
• 1978 » Thomas Wyatt Turner, American biologist and academic (b. 1877)
• 1980 » Alexander Oparin, Russian biochemist and academic (b. 1894)
• 1980 » Sohrab Sepehri, Iranian poet and painter (b. 1928)
• 1983 » Walter Slezak, Austrian-American actor and singer (b. 1902)

• Koningin Juliana (Huis van Oranje-Nassau) was from September 4, 1948 till April 30, 1980 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
• In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
• The Netherlands had about 13.8 million citizens.
• January 17 » Capital punishment in the United States resumes after a ten-year hiatus, as convicted murderer Gary Gilmore is executed by firing squad in Utah.
• March 11 » The 1977 Hanafi Siege: More than 130 hostages held in Washington, D.C., by Hanafi Muslims are set free after ambassadors from three Islamic nations join negotiations.
• April 28 » The Red Army Faction trial ends, with Andreas Baader, Gudrun Ensslin and Jan-Carl Raspe found guilty of four counts of murder and more than 30 counts of attempted murder.
• July 21 » The start of the four-day-long Libyan–Egyptian War.
• September 7 » The 300-metre-tall CKVR-DT transmission tower in Barrie, Ontario, Canada, is hit by a light aircraft in a fog, causing it to collapse. All aboard the aircraft are killed.
• November 22 » British Airways inaugurates a regular London to New York City supersonic Concorde service.

The temperature on April 21, 1977 was between 7.8 °C and 13.0 °C and averaged 10.6 °C. There was 1.1 mm of rain during 1.4 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest.