Muggle World: The London mayoral election was held. The Conservative candidate Boris Johnson defeated the incumbent Labour candidate Ken Livingstone. The London Assembly election also took place, with Brent and Harrow being the only constituency to change hands. Meanwhile, the British National Party gained a seat, their first outside local councils. Local elections were held in England and Wales. The night saw the governing Labour party fall to third place in the popular vote on 24%, behind the Conservatives on 44% and the Liberal Democrats on 25%. Death of Anthony Mamo, 1st President of Malta (born 1909).
Prompt: May 1 is Mother Goose Day and Save The Rhino Day.
02 Wed
Muggle World: Death of Philipp von Boeselager, German military officer (born 1917).
Prompt: May 2 is Fire Day.
03 Thu
Muggle World: Cyclone Nargis passes through Myanmar, killing over 100,000 people. Death of Leopoldo Calvo-Sotelo, Spanish Prime Minister (born 1926).
Prompt: May 3 is Lumpy Rug Day.
04 Fri
Prompt: May 4 is National Candied Orange Peel Day.
05 Sat
Prompt: May 5 is National Hoagie Day.
06 Sun
Prompt: May 6 is Beverage Day.
07 Mon
Prompt: May 7 is International Tuba Day, Paste Up Day and National Roast Leg of Lamb Day.
08 Tue
Birthday: Gregory Goyle (1980)
Muggle World: Death of François Sterchele, Belgian footballer (born 1982).
Prompt: May 8 is No Socks Day and Have A Coke Day.
09 Wed
Prompt: May 9 is Lost Sock Memorial Day.
10 Thu
Muggle World: Death of Leyla Gencer, Turkish soprano (born 1928).
Prompt: May 10 is Clean Up Your Room Day.
11 Fri
Muggle World: Manchester United secured their tenth Premier League title in 16 years with a 2–0 win at Wigan Athletic on the final day of the league season. Ryan Giggs, who scored one of United's goals, became the first player to win 10 English league titles.
Prompt: May 11 is Eat What You Want Day and Twilight Zone Day.
12 Sat
Muggle World: An earthquake measuring 7.9 Moment magnitude scale strikes Sichuan, China, killing an estimated 87,000 people. Deaths of Robert Rauschenberg, American pop artist (born 1925) and Irena Sendler, Polish humanitarian (born 1910).
Prompt: May 12 is Limerick Day.
13 Sun
Muggle World: Deaths of Saad Al-Abdullah Al-Salim Al-Sabah, 4th Emir of Kuwait (born 1930) and Bernardin Gantin, Beninese cardinal (born 1922).
Prompt: May 13 is Leprechaun Day.
14 Mon
Prompt: May 14 is National Dance Like A Chicken Day.
15 Tue
Muggle World: Halifax Town A.F.C., a former Football League side, were expelled from the Conference National with multimillion-pound debts. Death of Willis Lamb, American Nobel physicist (born 1913).
Prompt: May 15 is National Chocolate Chip Day.
16 Wed
Muggle World: Death of David Mitton, producer and director (born 1939).
Prompt: May 16 is Wear Purple For Peace Day.
17 Thu
Muggle World: The FA Cup Final took place at Wembley Stadium between Portsmouth and Cardiff City with Portsmouth winning 1–0.
Prompt: May 17 is Pack Rat Day.
18 Fri
Prompt: May 18 is International Museum Day and Visit Your Relatives Day.
19 Sat
Prompt: May 19 is Frog Jumping Jubilee Day.
20 Sun
Muggle World: Joey Barton, a player for Newcastle United Football Club, was sentenced to six months in prison after being convicted of assault and affray.
Prompt: May 20 is Eliza Doolittle Day.
21 Mon
Muggle World: The first all-English European Cup final saw Manchester United beat Chelsea on penalties after a 1–1 draw in Moscow's Luzhniki Stadium.
Prompt: May 21 is National Memo Day and National Waitresses/Waiters Day.
22 Tue
Muggle World: Construction work began on the Olympic Stadium being built for the 2012 games.
Prompt: May 22 is Buy-A-Musical-Instrument Day.
23 Wed
Muggle World: The Union of South American Nations, an intergovernmental organization between states in South America, is founded. The International Court of Justice awards Middle Rocks to Malaysia and Pedra Branca to Singapore, ending a 29-year territorial dispute between the two countries. Death of Cornell Capa, Hungarian-American photographer (born 1918).
Prompt: May 23 is Penny Day.
24 Thu
Muggle World: Death of Rob Knox, actor (born 1989).
Prompt: May 24 is National Escargot Day.
25 Fri
Birthday: Tiago Delgado (1977)
Muggle World: NASA's Phoenix spacecraft becomes the first to land on the northern polar region of Mars.
Prompt: May 25 is Towel Day and National Tap Dance Day.
26 Sat
Muggle World: Deaths of Sydney Pollack, American actor, director and producer (born 1934) and Koloa Talake, 7th Prime Minister of Tuvalu (born 1934).
Prompt: May 26 is Grey Day.
27 Sun
Prompt: May 27 is Body Painting Arts Festival.
28 Mon
Muggle World: The Legislature Parliament of Nepal votes overwhelmingly in favor of abolishing the country's 240-year-old monarchy, turning the country into a republic. Deaths of Beryl Cook, artist (born 1926) and Sven Davidson, Swedish tennis player (born 1928).
Prompt: May 28 is National Hamburger Day.
29 Tue
Prompt: May 29 is End Of The Middle Ages Day.
30 Wed
Muggle World: The Convention on Cluster Munitions is adopted in Dublin.
Prompt: May 30 is My Bucket's Got A Hole In It Day.