The Evolution of the Calendar: From Mars to January
As we prepare to welcome a new year, it’s fascinating to explore the origins of our calendar and how it has evolved over time. Most of the world follows the Gregorian calendar, which has been in place for centuries, yet the first month of the year was not always January. In fact, March was once considered the starting point of the year. This article delves into the history and transformations of our calendar, tracing its roots back to ancient Roman civilization.
The Roman Calendar: A Brief Overview
The initial form of the calendar we use today is attributed to Romulus, the legendary founder of Rome. He devised a calendar consisting of ten months, and later two additional months, January and February, were added to align it with the solar year. The synchronization with the solar cycle has been a priority throughout history, although the order of the months has evolved and lost its original rationale over time.
Understanding Each Month
January
In its early form, the Roman calendar under King Numa Pompilius (753-674 B.C.) included January and February at the end of a ten-month calendar. This adjustment allowed for a more accurate timekeeping system that matched the solar year. The name January comes from the Latin word Ianuarius, derived from Janus, the Roman god of beginnings and transitions. Janus was unique, often depicted with two faces to symbolize looking both backward and forward.
February
Unlike January, February (or Februarius) did not derive its name from a deity. Instead, it refers to the Roman festival of Februa, a time for purification, as februare in Latin means “to purify.” Celebrated at the end of the Roman year, it positioned February as the final month of the calendar.
March
Named Martius in Latin, March marked the first month of the year in the early Roman calendar, honoring Mars, the god of war. For the Romans, the year began not in the midst of winter but with the arrival of spring—a time for renewed agricultural efforts and military campaigns. This practice of starting the year with the spring season was common in various cultures, including the UK, where the new year was celebrated in March until changing to the Gregorian calendar in 1752.
April
April, whose name may come from the Latin verb aperire meaning “to open,” symbolizes the blossoming of nature. Another theory connects it to Aphrodite, the Greek goddess of love.
May
Originally known as Maius, May was dedicated to Maia, the goddess of fertility and spring, who was also identified as the mother of Mercury. Some theorists suggest the name stems from a reference to the roman elders, the maiores.
June
June, or Iunius, is named after Juno, the queen of the Roman gods and the goddess of marriage and maternity. There are differing views regarding the name’s origin, as it may also reference the iuniores, or youth, aligning it with the themes present in May.
July
Initially named Quintilis—meaning “fifth” in Latin—July was later renamed in honor of Julius Caesar following his birth. Caesar implemented the first significant calendar reform, establishing the 365-day format that repositioned January as the year’s starting month.
August
In a similar vein, August began as Sextilis, the sixth month, before being renamed in 8 B.C. to honor Augustus Caesar, the first emperor of Rome.
September
September, or September, derives from the Latin word septem, which means “seven,” reflecting its original placement as the seventh month in the early Roman calendar.
October
October comes from octo, meaning “eight.” This month, like its predecessors, has no ties to mythology or emperors and is simply named for its numerical position.
November
November, from novem, signifies “nine,” again referencing its order in the original calendar structure.
December
Finally, December, named from decem for “ten,” rounds out the roman calendar. When Pope Gregory XIII reformed the calendar in 1582, the month names and order were preserved, but the system was adjusted to include leap years, ensuring better alignment with the solar year.
Conclusion
The evolution of our calendar is a testament to the adaptation and precision required for marking time throughout history. From its ancient Roman beginnings to the modern Gregorian system, our understanding of months has significantly changed, reflecting a long journey of cultural and historical development.
Key Takeaways
- The calendar has evolved from the Roman system, originally starting in March.
- January was dedicated to Janus, the god of beginnings.
- July and August were renamed to honor Julius and Augustus Caesar.
- The Gregorian reform in the 16th century adjusted the calendar while keeping the month names intact.

