Translation of "set difference" into German

Phrases similar to "set difference" with translations into German

• setting off the night before one normally would have departed, travelling in a different direction, spending the night there, and leaving for one's destination in the morning
  Einlegen einer Zwischenübernachtung an einem anderen Ort, weil das eigentliche Ziel in einer vom Ausgangspunkt aus gesehen ungünstigen Richtung liegt
• set differences
  Komplementärmengen