Ancient Romans labeled their years after those who served as Consul. The day was labeled in its relation to the nearest holiday or important public day.

So Julius Caesar's Birthday would look like:

Four days before the Ides of Quintilis in the year of Marius and Flaccus.

Which translates to July 12, 100 BC.

Mat 13:31  Another parable put he forth unto them, saying, The kingdom of heaven is like to a grain of mustard seed, which a man took, and sowed in his field: 

Mat 13:32  Which indeed is the least of all seeds: but when it is grown, it is the greatest among herbs, and becometh a tree, so that the birds of the air come and lodge in the branches thereof. 

Mat 13:33  Another parable spake he unto them; The kingdom of heaven is like unto leaven, which a woman took, and hid in three measures of meal, till the whole was leavened. 

Mat 13:34  All these things spake Jesus unto the multitude in parables; and without a parable spake he not unto them: 

Mat 13:35  That it might be fulfilled which was spoken by the prophet, saying, I will open my mouth in parables; I will utter things which have been kept secret from the foundation of the world. 

Same conversation in 50 ad through 400 ad, who is this Christ person?

to be fair, Jesus’ birthdate was predicted and known. otherwise, Herod wouldn’t have killed thousands of babies in Bethlehem.

not funny.... rather stupid.