21 August on the map of history
6 events the records the map draws date to 21 August, from 1914 to 1959. Each one opens the map on that very day.
- 1914
Battle of the Ardennes — two French armies walk into the German centre in fog
War record · World War I · 1914-08-21 – 1914-08-23
Open the map on this day → - 1914
Battle of Charleroi — the French Fifth Army is driven off the Sambre
War record · World War I · 1914-08-21 – 1914-08-23
Open the map on this day → - 1918
Second Battle of the Somme — the ground lost in March is retaken in a fortnight
War record · World War I · 1918-08-21 – 1918-09-03
Open the map on this day → - 1944
Montélimar — the attempt to trap the German Nineteenth Army retreating up the Rhône
War record · World War II · 1944-08-21 – 1944-08-29
Open the map on this day → - 1944
Dumbarton Oaks drafts the charter of the organisation that will be called the United Nations
War record · World War II · 1944-08-21 – 1944-10-07
Open the map on this day → - 1959
The map stops drawing Hawaii (USA); new borders for United States
Border record (CShapes 2.0)
Open the map on this day →
What this page states
A border event is what the border record states about its own outlines, under the names IntMap’s map writes on that day: «the map begins drawing», «stops drawing», «new borders for». It is computed by the map’s own code, comparing the day with the day before.
A name the record does not date is not listed: the map’s table of era names is written in years, so a renaming that falls on another country’s border day is left out.
OpenHistoricalMap, which the map draws from 1689 to 1885, is not included: its dates carry no precision, and most of its first-of-the-month dates are months or years written as days.
The war record covers only the wars IntMap documents day by day (World War I, World War II, Korean War, Vietnam War, Arab–Israeli Wars, Yugoslav Wars).
Sources
CShapes 2.0 (Schvitz et al. 2022, icr.ethz.ch/data/cshapes) · CC BY-NC-SA 4.0
Territory and dates: the documented record, compiled in scripts/wars/. Country outlines: CShapes 2.0 (Schvitz et al. 2022, icr.ethz.ch/data/cshapes).