oneThis plural form is used for numbers like: 1
Every %1$d day
otherThis plural form is used for numbers like: everything else
Every %1$d days
Tous les jours
Tous les %1$d jours
Every %1$d day
Every %1$d days
Every %1$d day
Every %1$d days
Tous les %1$d jour
Tous les %1$d jours
Tous les jours
Tous les %1$d jours
%1$d - number