Windrush Day is a commemoration in the United Kingdom held on 22 June to honour the contributions of migrants to the post-war economy. Specifically, it celebrates African-Caribbeans who began arriving on the HMT Empire Windrush in 1948. Later known as the "Windrush generation", these economic migrants were an important part of the UK's recovery from the privations of World War II. Windrush Day is not a bank holiday but has grown in popularity since a campaign by Patrick Vernon led to its introduction in 2018.