Where does “sankta ĵaŭdo” come from?

sankta ĵaŭdo (Esperanto) comes from Esperanto ĵaŭdo, from French jeudi, from Old French jeudi, from Latin dies iovis, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous, from Proto-Indo-European dyḗws — to be bright; sky, heaven.

sankta ĵaŭdo (Esperanto): the Thursday before Easter, Holy Thursday, Maundy...

Definitions

  1. the Thursday before Easter, Holy Thursday, Maundy...

Ancestry of “sankta ĵaŭdo”, step by step

sankta ĵaŭdo traces back through two separate lines of ancestry.

via Esperanto ĵaŭdo

StepLanguageWordMeaning
1EsperantoĵaŭdoThursday
2FrenchjeudiThursday
3Old FrenchjeudiThursday
4Latindies iovisThursday
5LatindiēsA day, particularly
6Proto-Italicdjēmaccusative singular of *djous
7Proto-Italic*djous—
8Proto-Indo-Europeandyḗwssky, heaven; sky god
9Proto-Indo-Europeandyéwssky, heaven
10Proto-Indo-Europeandyew-to be bright; sky, heaven

via Esperanto sankta

StepLanguageWordMeaning
1Esperantosanktaholy, sacred
2Latinsānctussacred, made inviolable, having been established as sacred
3LatinIacobusJacob; James; Saint James
4Ancient GreekἸάκωβος—
5Ancient GreekἸακώβJacob
6HebrewיַעֲקֹבJacob
7Hebrewעָקֵבheel of the foot; heel
Every word from Proto-Indo-European dyew- →Every word from Proto-Indo-European dyéws →Every word from Proto-Indo-European dyḗws →