"The Christian holiday of All Saints' Day falls on 1 November, followed by All Souls' Day on 2 November, and is currently a Solemnity in the Roman Rite of the Catholic Church, a Festival in the Lutheran Churches, as well as a Principal Feast of the Anglican Communion." ~ Wikipedia
The Predella of the San Domenico Altarpiece by Fra Angelico is most often shown as a cropped piece of religious art featuring an all saints' concept - here is the art work as a whole as found on Wikimedia Commons
The Day of the Dead by William-Adolphe Bouguereau from Wikimedia Commons ... it is an autumn memorial day in November that you may associate with the spring memorial day in May
references:
https://en.wikipedia.org/wiki/All_Saints%27_Day
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