Why is the Western world's most famous birthday celebrated on a seemingly-arbitrary date? As Ben, Matt and Noel discover in the second chapter of this special two-part holiday series, the power structures of ancient empires experienced a progression of conspiracies, geopolitical subterfuge and good, old-fashioned numerical miscalculation in their quest to give the global public a specific birthday for Jesus Christ. (Spoiler: they all knew December 25th was not Jesus's actual birthday, and created a fiction that continues today.)