Semaphore or signal flag.
The compound noun 'Flag Day' is a proper noun, the name of a specific day of commemoration.
Old Glory.
The Alabama state flag has a Crimson cross on a white field. It is also called the confederate battle flag.
President's Day Labor Day Columbus Day Flag Day secretary's day
Old Glory
bahamas day
flag day is about celebrating the American flag, but its not a holiday.
It has been called, "Star and Bar", referring to the appearance of the flag, but there are no official names other than The Texas State Flag
Some call that a banner, but it is actually a pennant.
You can celebrate flag day by wearing your country's flag.
Flag Day is a day that is marked to celebrate the adoption of the US flag. Flag Day 2014 is celebrated on Saturday, June 14, 2014.