Notes

The derivation of the Latin name Aprilis is uncertain. The traditional etymology is from the verb aperire, "to open," in allusion to its being the season when trees and flowers begin to "open," which is supported by comparison with the modern Greek use of ἁνοιξις (anoixis) (opening) for spring. Since some of the Roman months were named in honor of divinities, and as April was sacred to the goddess Venus, her Veneralia being held on the first day, it has been suggested that Aprilis was originally her month Aphrilis, from her equivalent Greek goddess name Aphrodite (Aphros), or from the Etruscan name Apru. Jacob Grimm suggests the name of a hypothetical god or hero, Aper or Aprus.[1]

April was the second month of the earliest Roman calendar, before Ianuarius and Februarius were added by King Numa Pompilius about 700 BC. It became the fourth month of the calendar year (the year when twelve months are displayed in order) during the time of the decemvirs about 450 BC, when it also was given 29 days. The 30th day was added during the reform of the calendar undertaken by Julius Caesar in the mid-40s BC, which produced the Julian calendar.

The Anglo-Saxons called April Oster-monath or Eostur-monath. The Venerable Bede says in The Reckoning of Time that this month Eostur is the root of the word Easter. He further states that the month was named after a goddess Eostre whose feast was in that month. St George's day is the twenty-third of the month; and St Mark's Eve, with its superstition that the ghosts of those who are doomed to die within the year will be seen to pass into the church, falls on the twenty-fourth. In China the symbolic ploughing of the earth by the emperor and princes of the blood took place in their third month, which frequently corresponds to April[citation needed]. The Finns called (and still call) this month huhtikuu, or 'Burnwood Month', when the wood for beat and burn clearing of farmland was felled.[2] In Slovene, the most established traditional name is mali traven, meaning the month when plants start growing. It was first written in 1466 in the Škofja Loka manuscript.[3]