Old Irish lá

← Proto-Celtic *latyom (inherited)

← Proto-Indo-European *leh₁t- (inherited)

← Old Irish laithe (mention)

← Old Irish lá (mention)

← Old Irish laithe (mention)

← Proto-Slavic *lěto (cognate)

→ Irish lá (inherited)

→ Scottish Gaelic latha (inherited)

→ Manx laa (inherited)

→ Old Irish lá (mention)