Where does “Koningsdag” come from?

Koningsdag (Dutch) comes from Dutch dag, from Middle Dutch dach, from Old Dutch dag, from Proto-West Germanic dag, from Proto-Germanic dagaz, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.

Koningsdag (Dutch): a national holiday in the Netherlands, occurring on April 27th (or April 26th, if it would otherwise fall on a Sunday) as an official celebration of its current king's birthday

Definitions

  1. a national holiday in the Netherlands, occurring on April 27th (or April 26th, if it would otherwise fall on a Sunday) as an official celebration of its current king's birthday

Ancestry of “Koningsdag”, step by step

Koningsdag traces back through two separate lines of ancestry.

via Dutch dag

StepLanguageWordMeaning
1Dutchdagday; daytime; !
2Middle Dutchdachday
3Old Dutchdagday
4Proto-West Germanicdagday
5Proto-Germanicdagazday; name of the D-rune
6Proto-Indo-Europeandʰegʷʰ-to burn; warm, hot

via Dutch koning

StepLanguageWordMeaning
1Dutchkoningking
2Middle Dutchcōnincking
3Old Dutchcunincking
Every word from Proto-Indo-European dʰegʷʰ- →Every word from Proto-Germanic dagaz →Every word from Proto-West Germanic dag →