When Is Flag Day In 2025. Flag day commemorates the adoption of the american flag by resolution of the second continental congress in 1777. The next 10 years (day of the week & countdown) here’s a list of the next 10 years’ flag day 2025 dates, including the day of the week and how many days.

Read about national flag day in australia in 2025. In the united states, flag day is celebrated on june 14, 2025.