Calendar Origins

The answers to many questions about calendars

Calendar - from Middle English calender, Latin calendarium (account book). The Romans called the first day of each month Kalendae, or calends. Debts were due on this day, so books to track payments were called calendarium from which we get our modern day calendar.

Modern Calendar Origins:

Calendar Origins - Where did calendars begin?

Day Name Origins - Where did the Names of Days come from?

Calendar Name Origins - Where did the Names of Months come from?

Months of the Year Origin - Why 12 months in a year?

Why 28 days in February?

Who set the Year 0, AD, BC?

Calendars it Derived From:

Egyptian Calendar

Roman Calendar

Julian Calendar

Calendar Name Origins - Names of Months

January - ME Januari(us), OE Januarius, translation of Latin Januarius, named after JANUS, god of beginnings.
February
- ME OE Februarius from Latin Februarius, named for Februa, the feast of purification.
March - ME March(e), from Latin Martius, (month of) Mars.
April - ME Averil, OF Avril, Latin Aprilis mensis (month). The name may derive from the Greek goddess of love, Aphrodite.
May - ME OE Maius, Latin Maius mensis (month), from the Greek Maia, goddess of spring (growth).
June - ME Jun(e), OE Iunius, from Latin mensis Junius, named after the goddess Juno, Queen of the gods.

July - ME Julie, OE Julius, from Latin Julius (Caesar) after whom it was named in 44 BC. The original name was quintilis, fifth month in the early Roman calendar.
August - ME OE Agustus from Latin Augustus (Caesar) 8 BC. The original name was sextilis, sixth month in the early Roman calendar.
September
- ME Septembre from Latin September, seventh month in the early Roman calendar
October - ME OE from Latin October, eighth month in the early Roman calendar
November - ME OE from Latin November, ninth month of the early Roman calendar, from novem NINE
December - ME Decembre from OF and Latin December, tenth month of the early Roman calendar (decem TEN + membri from mens MONTH + ri suffix).

ME = Middle English
OE = Old English
OF = Old French
OHG = Old High German

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