Old Prussian dēinā

← Proto-Indo-European *déi-no- (derived)

← Proto-Indo-European *dyew- (mention)

← Latvian diena (mention)

← Samogitian dėina (mention)

← Proto-Slavic *dьnь (cognate)

→ Lithuanian diena (cognate)

→ Latvian diena (cognate)

→ Albanian din (cognate)