What happened to flags on 7 May
2 flags in the atlas carry this date. The sentence under each one is where that is written down, in its own article.
- Russia 1883
On 7 May 1883, the Russian flag was authorised to be used on land, and it became an official National flag before the coronation of Tsar Nicholas II in 1896.
From Flag of Russia on Wikipedia, as it read on 2026-08-29
- Sweden 1897
On 7 May 1897, an alternate state flag was introduced.
From Flag of Sweden 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.