The Philocalian Calendar or Chronograph of 354 lists Rome\’s consuls from 255 to 352, Roman bishops from 255 to 352, and martyrs\’ anniversaries. It is the first document to mention Christmas. The list of martyrs begins with the birth of Christ on December 25, whereas the list of consuls begins on Friday, the fifteenth day of the new moon. The list of Roman bishops concludes with the two most recent bishops out of order, indicating that it was compiled in 336, before these additions, and that the city was already celebrating Christ\’s birth as a festival at the time.
