when were january and february added to the calendar
Roman calendar Plutarch believed Numa was responsible for placing January and February first in the calendar;[15][16] Ovid states January began as the first month and February the last, with its present order owing to the Decemvirs.[22][23] W. Warde Fowler believed the Roman priests continued to treat January and February as the last months of the calendar throughout the Republican period.[24]