Reunification Day, also known as Victory Day, Liberation Day, or by its official name, Day of the Liberation of the South and National Reunification is a public holiday in Vietnam that marks the event when the North Vietnamese and Viet Cong forces captured Saigon, the capital of South Vietnam, on 30 April 1975, thus ending the Vietnam War. The event marked the start of the transition period of reunification, which also occurred in a national election for reunification on 2 July 1976, when the South Vietnam and North Vietnam were merged, forming the modern-day Vietnam.

Ho Chi Minh City, commonly known as Saigon, is the most populous city in Vietnam, with a population of around 9.3 million in 2023. The city's geography is defined by rivers and canals, of which the eponymously-named Saigon River is the largest. As a municipality, Ho Chi Minh City consists of 16 urban districts, five rural districts, and one municipal city (sub-city). As the largest financial centre in Vietnam, Ho Chi Minh City has the highest gross regional domestic product out of all Vietnam provinces and municipalities, contributing around a quarter of the country's total GDP. Ho Chi Minh City's metropolitan area is ASEAN's 6th largest economy, also the biggest outside an ASEAN country capital.