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• flag day
  flag day

  noun

  tag day.
• Flag Day
  Flag Day

  noun

  June 14, the anniversary of the day (June 14, 1777) when Congress adopted the Stars and Stripes as the national flag of the United States.

flag day

¹ American  

noun

(sometimes initial capital letters)

1. tag day.

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Flag Day ² American  

noun

1. June 14, the anniversary of the day (June 14, 1777) when Congress adopted the Stars and Stripes as the national flag of the United States.

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Flag Day ¹ British  

noun

1. June 14, the annual holiday in the US to celebrate the adoption in 1777 of the Stars and Stripes

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flag day ² British  

noun

1. a day on which money is collected by a charity and small flags, emblems, or stickers are given to contributors

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Etymology

Origin of flag day

First recorded in 1910–15

Example Sentences

See Examples For:

flag day Flag Day

It was a red flag day with triple-digit temperatures and a strong, dry wind blowing from the south.

From Los Angeles Times ● Jul. 25, 2026

He skipped an annual ceremony on Sunday in Minsk for Belarus’s flag day, an event at which he usually speaks, leaving his prime minister to read a statement.

From New York Times ● May 15, 2023

Tuesday is Ukraine’s national flag day and Wednesday — Aug. 24 — is the celebration of independence from control by Moscow that the former Soviet Union republic declared in 1991.

From Seattle Times ● Aug. 22, 2022

Pelle also noted that the day the fire started was a "red flag day," meaning people were not allowed to start fires.

From Fox News ● Jan. 2, 2022

Grimsby is to have a flag day for the local hospitals.

From Punch, or the London Charivari, Volume 156, June 4, 1919. by Various

The event coincides with President Donald Trump's 80th birthday, which is also Flag Day, and is part of celebrations for America's 250th anniversary.

From BBC ● Jun. 14, 2026

Trump could announce the 250 acts of mercy on June 14, which is both Flag Day and his birthday, or on the Fourth of July, some of the people said.

From The Wall Street Journal ● May 13, 2026

That moment came courtesy of a guy wearing a Cubs uniform, but Monday grew up in Santa Monica and delivered his spontaneous commemoration of Flag Day in the year of America’s bicentennial.

From Los Angeles Times ● Apr. 19, 2026

The lightweight championship clash will top a bill of six fights set to take place on the US Flag Day holiday and the 80th birthday of President Donald Trump, who is an avowed UFC fan.

From Barron's ● Mar. 8, 2026

If by “celebrity,” you mean the guy who tosses candy from the back of a red convertible that leads Batavia’s annual Flag Day parade.

From "Love, Hate & Other Filters" by Samira Ahmed