Flag Day (disambiguation)

Flag day may refer to:

• A Flag Day to fly a flag of a certain area or a day set aside to honor an event specifically involving a national flag
  • Flag Day (Australia), celebrated 3 September
  • Flag Day (United States), celebrated on June 14
  • Flag Day (Argentina), the holiday dedicated to the Argentine flag and to the commemoration of its creator, Manuel Belgrano
  • National Flag of Canada Day, observed annually on 15 February
• In the UK and Ireland, "Flag Day" refers to a day when a charity raises funds by collecting in the street and door-to-door, donors being given a small flag or badge to wear, showing that they have supported the charity.
• Flag Day (Hong Kong), a day when a charity raises funds by collecting in the street, donors are given a small adhesive flag to wear, showing that they have supported the charity. Such activities are co-ordinated and approved by the government's Social Welfare Department to stamp out bogus frauds.
• In India the term refers to a day when armed forces raise funds by collecting donations door-to-door nationally, as a sign of solidarity among the general public towards the welfare of the personnel, and in return distributing token flags.
• Flag day (software), a jargon term used in discussing computer systems to denote a change which will require a complete restart or conversion of a sizable body of software or data
• Flag Day (The Housemartins song), the first single released by The Housemartins