May 28·Every year

National Hamburger Day

The hamburger's origin is disputed between Hamburg, Germany (where the Hamburg steak was brought to America by immigrants) and at least three US towns that all claim to have invented the sandwich form in the 1880s–1900s. Americans eat 50 billion burgers annually. The argument about who invented it continues.

Category: Food
Observed in: United StatesCanadaAustraliaGermany

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Notable · 2010

A train derailment and collision in the West Midnapore district of West Bengal, India, caused the deaths of at least 148 passengers.

2017Former Formula One driver Takuma Sato wins his first Indianapolis 500, the first Japanese and Asian driver to do so. Double world champion Fernando Alonso retires from an engine issue in his first entry of the event.
2016Harambe, a gorilla, is shot to death after grabbing a three-year-old boy in his enclosure at the Cincinnati Zoo and Botanical Garden, resulting in widespread criticism and sparking various internet memes.
2013Start of the Gezi Park protests in Turkey.