On Tuesday, June 14, we celebrate the national symbol of the United States: the American flag, according to nationalflagday.com. Here are five things you should know about the American flag and Flag Day:

1. Significance of the colors

The white on the flag represents purity and innocence, red represents hardiness and valor and blue represents vigilance, perseverance and justice, according to usflag.org.

2. Betsy Ross

There is no credible evidence on whether or not Betsy Ross made the first American flag. Many historians believe Ross to have made the first flag, but since there is no official documentation to confirm this, no one is certain of the creator, according to History.com.

3. How many versions of the flag?

There have been 28 different variations to the American flag. The number of stripes has always been the same, but over time, the number of stars has increased, according to viewamerica.net.

4. Who created Flag Day?

Flag Day was created by Bernard Cigrand in Waubeka, Wisconsin. Cigrand was a 19-year-old school teacher who asked his students to write an essay on what the flag meant to them. Cignard then called June 14 the flag’s birthday, according to nationalflagday.com.

5. When was Flag Day made national?

Flag Day was celebrated in different communities, but not until August 3, 1949, did President Truman signed an Act of Congress designating June 14 of each year as National Flag Day, according usflag.org.