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Roman Calendar by Yuen Tai

Page history last edited by PBworks 13 years, 2 months ago


Introduction and History of Roman Calendar


Though the Roman calendar is not used today, it has close relationships with the calendars today. The names of the months in the calendars today originated from Roman Calendars. Initially, the Roman calendar only contains 10 months in a year; 6 of 30 days and 4 of 31 days; the 10 months came out to be 304 days. The Romans neglected the 61 days that fell in the middle of the winter. That was the case until the Roman ruler Numa Pompilius added 2 extra months to the calendar thus making it 12 months, with 355 days in a year.


Astronomical Basis


The Romans had a defined marker within each month, which was based on the moon. Roman months were identical to the lunar cycle; each month was divided into 3 sections. The sections were named Kalends, Nones, and Ides which corresponds with the new, first quarter, and full moon phases respectively.



                                                       Days of Ides    Days of Nones   Days of Kalends

image provided by: http://www.webexhibits.org/calendars/calendar-roman.html


Days of Kalends


Out of the three sections, Kalends last for the longest, because it starts from the day when the lunar crescent was first sighted until the first quarter moon phase then it starts again after full moon phase all the way until another lunar crescent was sighted. The Romans calculated that it’ll take atleast 6 days before lunar crescent reaches the first quarter moon phase which begins the Days on Nones.


Days of Nones


Days of Nones start from the day when the moon reaches its first quarter phase until it reaches full moon.


Days of Ides


Days of Ides is when the moon reaches full moon phase.








Comments (5)

Anonymous said

at 1:04 pm on Oct 14, 2008

Yes, I took all that into a consideration, but an average student like me does not like to read long and wordy websites. So I tried to include as much information as I can and make it brief to deliver what I have to say to the readers.

Anonymous said

at 1:00 pm on Oct 14, 2008

Yuen-Tai's page is fairly informative, however, he could have included a bit more information. I think he did a good job on his page.

Anonymous said

at 12:57 pm on Oct 14, 2008

Yo Yuen Tai, what's up fellow astronomy student. I liked your page because it was brief and easy to read. I like the picture of the moon, BUT more information and pictures would be great. On my scale your page is a 4 out of 5 Stars, but I bet Mr. Ovetsky would like more, so I would you suggest to add a little but more. Thanks and have a nice day.

Anonymous said

at 12:40 pm on Oct 14, 2008

The titles of the sections were really helpful and added a nice touch. I would have liked to learn a little more about the roman calendar, and the information that you do have, though informative, was a little confusing.

Anonymous said

at 12:37 pm on Oct 14, 2008

Although it accomplishes the assignment, the page is on the short side. There is a large empty space in the middle of the page. That space throws off the harmony of the paper. A little more information or better manipulation of space would improve your page. I like that you labeled particular sections of your page because it makes it easy to look for certain information.

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