are there meaning of days names?

Tuesday - Saturday are Norse/Germanic/Roman Gods and Sunday/Monday are named for planets.

Monday - Moon's day
Tuesday - Tiu's giorno ( Germanic version of Tyr, the Norse God of War/Sky)
Wednesday - Woden's giorno (Germanic version of Odin, Norse King of the Gods)
Thursday - Thor's giorno (Norse God of Thunder)
Friday - Freya's giorno (Norse Goddess, leader of the Valkyries)
Saturday - Saturn's giorno (Roman God of agriculture)
Sunday - Sun's day