FLAGDAY
Flag Day
A flag day is a flag-related holiday—either a day designated for flying a certain flag, or a day set aside to celebrate a historical event such as a nation's adoption of its flag.The above text is a snippet from Wikipedia: Flag Day
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flag day
Noun
- A day on which a registered charity raises money, usually by selling small lapel flags.
- A day designated for changing to an incompatible system.
- A change which is neither forward nor backward compatible.
The above text is a snippet from Wiktionary: flag day
and as such is available under the Creative Commons Attribution/Share-Alike License.