What happened to flags on 13 July
3 flags in the atlas carry this date. The sentence under each one is where that is written down, in its own article.
- Norway 1821
However, the king refused to sign the flag law, but approved the design for civilian use by royal order in council on 13 July 1821.
From Flag of Norway on Wikipedia, as it read on 2026-08-29
- Montenegro 2004
It was officially adopted on 13 July 2004, when the then Republic of Montenegro was a constituent of the State Union of Serbia and Montenegro, and its precise specification was standardized on 16 September 2004.
From Flag of Montenegro on Wikipedia, as it read on 2026-08-29
- France 2020
On 13 July 2020, President Emmanuel Macron reverted, without any statement and with no orders for other institutions to use a specific version, to the darker hue for the presidential Élysée Palace, as a symbol of the French Revolution.
From Flag of France on Wikipedia, as it read on 2026-08-29
How a day gets onto this site
A flag is here because a sentence in its own English Wikipedia article puts it on this date, and that sentence is printed above. Nothing was worked out from a year, and nothing was written for the occasion. Every sentence names the article it came from and the version of that article it was read in, so you can go and check it.
The calendar is still short rather than full. A third of the year has no page here, because a flag only gets a day when a sentence in its article puts something on one, and plenty of articles never do. Nothing is invented to fill the gap.