Holy Martyr Themistocles of Myra in Lycia.
The holy martyr Themistocles was a shepherd of Myra in Lycia who suffered under the persecution of Decius in the third century. Tradition relates that when soldiers searched for a Christian named Dioscorides, Themistocles refused to betray him and declared himself a Christian instead.
He was cruelly tortured and beheaded, and is honoured as a martyr of Lycia.
Feast day
On the New Calendar, Themistocles of Myra is commemorated on December 21. Churches on the Old (Julian) Calendar keep the feast on January 3 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Themistoklis, Themistocles, Themis
Also commemorated on December 21

Five Hundred Martyrs and One Hundred Thirty Women of Nicomedia
Saint, Πεντακόσιοι Μάρτυρες και Εκατόν Τριάντα Γυναίκες
The five hundred men and one hundred thirty women martyred at Nicomedia with Saint Juliana.
Peter of Moscow
Hierarch, Πέτρος Μόσχας
Peter the Wonderworker, Metropolitan of Kiev and All Russia, first hierarch of Moscow.