What happened to flags on 28 January
2 flags in the atlas carry this date. The sentence under each one is where that is written down, in its own article.
- Rwanda 1961
A vertical tricolour of red, yellow, and green was adopted following the coup of Gitarama on 28 January 1961, which saw the abolition of the Tutsi-dominated monarchy and the establishment of a Hutu-dominated republic.
From Flag of Rwanda on Wikipedia, as it read on 2026-08-26
- Ukraine 1992
When the Soviet Union dissolved in 1991, the bicolor flag gradually returned to use before being officially adopted again on 28 January 1992 by the Ukrainian parliament.
From Flag of Ukraine 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.