What happened to flags on 28 May
2 flags in the atlas carry this date. The sentence under each one is where that is written down, in its own article.
- Spain 1785
Finally, Charles III, through the Royal Decree of May 28, 1785, established a new national ensign: Para evitar los inconvenientes, y perjuicios, que ha hecho ver la experiencia puede ocasionar la Bandera nacional, de que usa mi Armada naval, y demas Embarcaciones Españolas, equivocándose á largas distancias, ó con vientos calmosos con las de otras Naciones; he resuelto, que en adelante usen mis Buques de guerra de Bandera dividida á lo largo en tres listas, de las que la alta, y la baxa sean encarnadas, y del ancho cada una de la quarta parte del total, y la de en medio amarilla, colocándose en esta el Escudo de mis Reales Armas reducido á los dos quarteles de Castilla, y Leon con la Corona Real encima; y el Gallardete con las mismas tres listas, y
From Flag of Spain on Wikipedia, as it read on 2026-08-29
- Philippines 1898
It was first displayed in the Battle of Alapan on May 28, 1898, after the Spaniards were defeated and surrendered to Aguinaldo.
From Flag of the Philippines 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.