To get technical Jesus was born while his parents were traveling to pay their taxes, hence the crowded Inn, where other taxpayers were crowded. This probably happened in the Summer time, but somebody messed up the Calendar and we celebrate on Dec. 25... So maybe we should celebrate it in July or something.
I never before knew about the tax issues involved with the
the birth of Jesus.
Because of the reference to 'shepards watching their flocks
at night', I believe Jesus was born in the spring.
Jesus was born on April 15th.
To get really technical, we must celebrate the birth of Christ everyday, without exception, Amen.