Development of the Roman Calendar

Roman Calendars — in Transition

The dates displayed on this page show the transitions of the earliest Roman calendars to the last revised version.

Subscribe to Latin-Greek Cross References search area.
Sign up for the FREE Focusing on Words Newsletter.
Use this e-mail form for questions or comments.

Roman calendars from
Romulus (738 B.C.) to
Pope Gregory XIII (A.D. 1582)

Romulus	Numa	Council of Decemvirs	Julius	Augustus	Gregory XIII
Circa 738 B.C.	713 B.C.	451 B.C.	47 B.C.	8 B.C.	Europe A.D. 1582 England A.D. 1752
Months # Days	Months # Days	Months # Days	Months # Days	Months # Days	Months # Days

Martius 31	Januarius 29	Januarius 29	Januarius 31	Januarius 31	January 31
Aprilis 30	Martius 31	Februarius 28	Februarius 29/30	Februarius 28/29	February 28/29
Maius 31	Aprilis 29	Martius 31	Martius 31	Martius 31	March 31
Junius 30	Maius 31	Aprilis 29	Aprilis 30	Aprilis 30	April 30
Quintilis 31	Junius 29	Maius 31	Maius 31	Maius 31	May 31
Sextilis 30	Quintilis 31	Junius 29	Junius 30	Junius 30	June 30
Septemris 31	Sextilis 29	Quintilis 31	Julius 31	Julius 31	July 31
Octobris 30	Septembris 29	Sextilis 29	Sextilis 30	Augustus 31	August 31
Novembris 31	Octobris 31	Septembris 29	Septembris 31	Septembris 30	September 30
Decembris 29	Novembris 29	Octobris 31	Octobris 31	Octobris 31	October 31
	Decembris 29	Novembris 29	Novembris 31	Novembris 30	November 30
	Februarius 28	Decembris 29	Decembris 30	Decembris 31	December 31

304 days	355 days	355 days	365.25 days	365.25 days	365.2422 days

You may go to one of the Roman-modern months of your choice by clicking on the one you desire.

January	February	March	April
May	June	July	August
September	October	November	December

Procrastination is the thief of time.
Television does a pretty good job, too.

-Robert Orben

Permanence is a man-made fantasy smiled on by time.

-Paul von Ringelheim

Home Page | Contents
Access to Unabridged Cross-References for Paying Subscribers
Words for a Modern Age Book
Subscribe to Unabridged Latin-Greek Cross References
FREE Vocabulary-Newsletter Subscription
Anesthesia History
Blind Men and Elephant Poem
Cremation of Sam McGee Poem
Oxymora Introduction and Alphabetical Listing
Sample of Latin-Greek Cross References
Sample of Self-Scoring Quizzes
Visit the Word Focus Web Site.
Basic Latin-Greek prefixes and roots at the Get Words Web Site
An inventory of cross-reference groups that have been “completed” with available quizzes at Word Files Web Site or the Word Philes Web Site
For special poetry, links to news sites, etc., visit the Best Clips Web Site.
Special links to the Latin-Greek Quotations (mottoes, proverbs, phrases, and words) are located at the Logo Files or Logo Philes Web Sites.

Except for copying to disk for archival purposes, and for normal fair use exceptions relating to the quoting of short passages for purposes of commentary and the like, no part of the writing or the nonpublic domain graphics either herein or in the local links hereto may be reproduced, stored in a retrieval system, transmitted or retransmitted in any form by any means without the express prior written consent of John Robertson. Rights in remote links are as established by their respective owners.