What was March 15 known as in rome

The 15th of march 15 is known as the ides of March. Every Roman month had the kalends, nones and ides. The kalends were the first day of the month. The nones was the 8th day before the ides and fell on the 5th or 7th day of the month. It is thought that originally this was the day of the half moon. The ides fell on the 13th or the 15th of the month. It is thought that originally this was the day of the full moon.