Maximum complaint time since announcement of election results

ParliamentaryElection Act of Denmark: Bekendtg?relse af lov om valg til Folketinget(Folketingsvalgloven), (published 1987, last amended 2012-12-18)

Kapitel 11

Folketingets godkendelse af valget

? 88. Enhver v?lger kan klage over folketingsvalg. Klagerskal stiles til Folketinget og sendes til ?konomi- og indenrigsministeren.Klager skal v?re ?konomi- og indenrigsministeren i h?nde senest ugedagen eftervalgdagen.

https://www.retsinformation.dk/Forms/r0710.aspx?id=144959

The ParliamentaryElectoral System in Denmark: Guide to the Danish Electoral System (2011), p. 30

5.2.ELECTION COMPLAINTS

Anyvoter has the right to complain about the election. Such complaints must besent to the Ministry of the Interior and Health (but addressed to theFolketing) within a week of the election. […]

http://www.thedanishparliament.dk/Democracy/~/media/Pdf_materiale/Pdf_publikationer/English/The%20Parliamentary%20Electoral%20System%20in%20Denmark_samlet%20pdf.ashx