This Father's Day weekend brings another, more obscure holiday in the U.S.: Flag Day. Here's what the holiday is and how and when it started.

Happy Flag Day! Here's to the biggest holiday that you didn't know you were supposed to celebrate. It's true that mail delivery might not stop for Flag Day and you definitely won't be receiving a ...

Flag Day celebrates the symbolism and history of the American flag on June 14. The U.S. has celebrated the adoption of the Stars and Stripes in a variety of ways when President Woodrow Wilson ...

Flag Day’s start: While the adoption of the first U.S. flag happened on June 14, 1777, Flag Day was initially established by President Woodrow Wilson in 1916, according to the Library of Congress.

Flag Day commemorates June 14, 1777, when the Continental Congress determined the composition of the nation's banner: "Resolved, That the flag of the thirteen United States be thirteen stripes ...

Other sources suggest that schoolteacher B.J. Cigrand, who is known as "the father of Flag Day," established the holiday when he and his class at Stony Hill School, Wisconsin, celebrated it in 1885.

In 1916, President Wilson issued a proclamation of June 14 as Flag Day. And more than 30 years later, in 1949, President Truman signed a formal observance of the holiday into law.

Look out for the red, white and blue this week as the United States celebrates Flag Day. Here's what you should know about the special occasion, which pays tribute to the Stars and Stripes on June 14.

To this day, he is regarded as the “Father of Flag Day.” Since then, there have been 27 different versions of the American flag, and stars have been added as states joined the Union.