Where does “Alien Day” come from?

Alien Day (English) comes from English alien, from Middle English alien, from Old French alien, from Latin aliēnus, from Latin alius, from Proto-Italic aljos, from Proto-Indo-European h₂élyos, from Proto-Indo-European h₂él- — to grow, nourish.

Alien Day (English): April 26, as a "fan holiday" celebrating the science-fiction horror franchise Alien. The date 4/26 is in reference to fictional planet LV-426 where the Xenomorph was first unveiled

Definitions

  1. April 26, as a "fan holiday" celebrating the science-fiction horror franchise Alien. The date 4/26 is in reference to fictional planet LV-426 where the Xenomorph was first unveiled

Ancestry of “Alien Day”, step by step

Alien Day traces back through two separate lines of ancestry.

via English alien

StepLanguageWordMeaning
1EnglishalienAny life form of extraterrestrial or...
2Middle EnglishalienAn outsider or foreign person, especially one who...
3Old Frenchalienalien; foreign; non-native; alien
4LatinaliēnusOf that which belongs to another person, place, or object—of another, alien, foreign
5Latinaliusother, another, any other; else; different
6Proto-Italicaljosanother
7Proto-Indo-Europeanh₂élyosother, another
8Proto-Indo-Europeanh₂él-to grow, nourish

via English Day

StepLanguageWordMeaning
1EnglishDayderived from a medieval diminutive of David
2Middle Englishdayday; daylight, sunlight; epoch, age, period
3Old Englishdæġday, daytime
4Proto-West Germanicdagday
5Proto-Germanicdagazday; name of the D-rune
6Proto-Indo-Europeandʰegʷʰ-to burn; warm, hot
Every word from Proto-Indo-European h₂él-Every word from Proto-Indo-European h₂élyosEvery word from Proto-Italic aljos