What happened to flags on 25 April
4 flags in the atlas carry this date. The sentence under each one is where that is written down, in its own article.
- Lithuania 1918
It was adopted on 25 April 1918 during Lithuania's first period of independence (1918–1940), which ceased with the occupation first by the Soviet Union, and then by Nazi Germany (1941–1944).
From Flag of Lithuania on Wikipedia, as it read on 2026-08-29
- Faroe Islands 1940
During the British occupation of the Faroe Islands in World War II, the British authorities recognised Merkið for use by Faroese vessels on 25 April 1940; the date is observed as Flaggdagur (Flag Day).
From Flag of the Faroe Islands on Wikipedia, as it read on 2026-08-26
- Eswatini 1967
On 25 April 1967, the day the pledge of oath was taken by the king, the flag was hoisted for the first time.
From Flag of Eswatini on Wikipedia, as it read on 2026-08-26
- Oman 1995
On 25 April 1995, the flag's proportions were changed from 3:4 to 1:2.
From Flag of Oman on Wikipedia, as it read on 2026-08-26
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.