I was looking up some unrelated things and came upon this.
Herod the Great(who Jesus was hid from), Herod Archelaus(after he began rule Jesus returned to Nazareth), and Herod Antipas(who killed John the baptist). When Herod the Great died, those two sons from all historical sources are showing to have ruled from 4BC onwards. Herod the Great is the one who ordered, when he had come to learn about the birth of the King, all 2 years or younger. This is when Joseph had been told in the dream to flee to Egypt until he dies. Since he died around 4 BC, and Jesus was a 'young child' when returning to Nazareth, that would be a couple years prior.
Josephus says Herod died after a lunar eclipse, and it's verified in 5BCE, 4BCE and 1BCE of lunar eclipses.
It's fact he executed his own wife and 2 sons. Nothing recorded about killing of infants, but Bethlehem being such a small villiage at the time and surrounding areas could have been few.
So the events line up, but the current calander doesn't match up. I wonder how it had been figured what year he was born?