The dog name "Antar" has an interesting background. It comes from Arabic and means "brave" or "courageous". Antar was also the name of a famous Arab poet and warrior who lived in the sixth century. He was known for his love for a beautiful woman named Abla, whom he sang about in many of his poems. Antar is considered one of the ancestors of the Bedouins and a hero of Arabic literature.
Unfortunately, there is no name day for this name, as he is not one of the Christian saints. But that shouldn't stop you from giving your dog this name if you like it. Maybe you can make up your own name day for him, for example on his birthday or on the day you got him. Or you can simply celebrate with him every day, because he is certainly a loyal and brave friend to you.