Five planets recently aligned, that's what happened in Bethlehem long time ago, three planets had aligned: Venus, Mars, and Jupiter; It looked like one big giant star ,in the skies; That is what the wise men had being actually following. Three wise men? actually the Bible does not actually say how many wise men they were.
Going from the recent alignment to the one in early B.C ,it is easy to use math to determined Jesus' actual birthday, and by using a Hebrew calendar it translates to our calendar as March 20, 6 B.C.
Jesus was NOT born on December 25; They chose that date ,to combine it with the Pegan holidays.
When Jesus was on earth, the year was change to the year of 0000. That is why this is the 21st Century and not the 20th. Have no idea why they did not start that year as 0001.
Jesus was executed on a Friday the 13th* during a full moon. In fact, Easter always is on the first full moon after the beginning of Spring. that is why Easter sometimes in March, other times April,
This Easter Sunday, look outside and you will notice the full moon.
The moon makes a complete circle around the earth every 28 1/2 days, which means it stays in a astrological sign for about 2 1/2 days. The word month did come from the word moon.
*Depends on what calendar a person is using, some say it was Wednesday the 11th.