"The Days of the Week" is number 177 in the Hans Christian Andersen Center's register of Andersen's literary works, i.e. no. 177 in the category fairy tale (the range 1 - 300). BFN 977.
"The Days of the Week" was first published November 1868, cf. the bibliographic description (in Danish) in : Digterens danske Værker 1822-1875, number in bibliography: 977:
Trykt i Souvenir 1869, udgivet af Chr. Thorkilsen. Optaget under Februar. (Udkom November 1868). (Saml. Skr. XV, 206).
Show this work in its context: all new Andersen publications from 1868.
The work was published later (30 March 1872) as a part of Nye Eventyr og Historier. Tredie Række. Ny [første] Samling. 1872 [Danish title]. (Number 335. BFN 1017. Category/genre: Fairy tale collection).
The work was published later (20 December 1874) as a part of Eventyr og Historier. Femte Bind. 1874 [Danish title]. (Number 337. BFN 1039. Category/genre: Fairy tale collection).
The Hans Christian Andersen library (bibliographies):