It is a day that always is on November 1, unlike the "Alla Helgons Dag" that in Sweden now is the name for a floating holiday, located in the Saturday that falls between 31 October and 6 November.
The origin of these two days are the same, and the original site was 1 november, a date which is kept in most countries and in the Swedish calendar always been free from other names.
The distinction between the two names were introduced in 1953, when "Alla Helgons Dag" was moved from being the first Saturday in November to its current location, and also became a public holiday (Saturdays were still working when the decision was taken in 1953).
Since 1 november continued called "Allhelgonadagen", then the new weekend day name is : "Alla Helgons Dag", and since it is the Saturday that falls between 31 October and 6 November, this year it will be Saturday November 3.
Before that was not made that distinction, both days were called "All Saints Day" or "All Saints Day" (the names were synonymous).
This painting is The Forerunners of Christ with Saints and Martyrs (about 1423-24) Tempera on wood, 31,9 x 63,5 cm National Gallery, London, made of:
Fra Angelico (born Guido di Pietro; c. 1395– February 18, 1455) was an Early Italian Renaissance painter described by Vasari in his Lives of the Artists as having "a rare and perfect talent".
detail from Deeds of the Antichrist fresco (c.1501) in Orvieto Cathedral, Italy.