Roman Calendar

The Roman calendar evolved from a lunar system to a solar calendar, influencing modern timekeeping. Initially, it had ten months, starting in March, totaling 304 days. Later, January and February were added, making it 12 months and approximately 355 days. To align with the solar year, the Romans occasionally inserted a leap month. In 45 BCE, Julius Caesar reformed the calendar, creating the Julian calendar with 365 days and a leap year every four years, which laid the groundwork for the Gregorian calendar we use today. Key months include January, March, June, and December, reflecting their historical roots.