What happened to flags on 1 May
2 flags in the atlas carry this date. The sentence under each one is where that is written down, in its own article.
- Marshall Islands 1979
The flag of the Republic of the Marshall Islands, an island nation in the Pacific, was adopted upon the start of self-government, May 1, 1979.
From Flag of the Marshall Islands on Wikipedia, as it read on 2026-08-26
- Mozambique 1983
The current design, adopted on 1 May 1983, is defined in the Constitution of Mozambique, and regulations regarding the flag's use are outlined in decree no.
From Flag of Mozambique 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.