Julian calendar

== General and cited references ==
* Bonnie Blackburn and Leofranc Holford-Strevens, ''The Oxford Companion to the Year'', Oxford University Press, reprinted with corrections 2003.
* {{cite book
|title=Le Calendrier romain: Recherches chronologiques
|date=1983
|publisher=Ottawa University Press
|last1=Brind'Amour
|first1=Pierre
}}
* {{cite web | date = 2008 | url = https://ethiopianembassy.org/ethiopian-time/ | title = Ethiopian Time | publisher = Embassy of Ethiopia | location = Washington D.C.}}
* {{cite book
|title=Caesar's Calendar: Ancient Time and the Beginnings of History
|url=https://archive.org/details/caesarscalendara0000feen
|url-access=registration
|date=2007
|publisher=University of California Press
|location=Berkeley
|last1=Feeney
|first1=Dennis|isbn=9780520251199
}}
* {{cite book
|title=The Roman Calendar from Numa to Constantine: Time, History and the Fasti
|date=2011
|publisher=Wiley
|last1=Rüpke
|first1=Jörg}}
* {{cite book
|title=Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac
|author=Nautical Almanac Offices of the United Kingdom and the United States of America
|publisher=Her Majesty's Stationery Office
|date=1961
|location=London}}
* {{cite book
| publisher = Oxford University Press
| isbn = 978-0-19-286205-1
| last = Richards
| first = E. G
| title = Mapping Time: The Calendar and its History
| url = https://archive.org/details/mappingtimecalen00rich
| url-access = registration
| date = 1998
}}
* {{cite book
| last1 = Richards | first1 = E. G.
| editor-last1 = Urban | editor-first1 = Sean E.
| editor-last2 = Seidelmann | editor-first2 = P. Kenneth
| edition = 3rd
| publisher = University Science Books
| isbn = 978-1-891389-85-6
| title = Explanatory Supplement to the Astronomical Almanac
| location = Mill Valley, Calif
| date = 2013
}}
* {{cite book
|last1=Stern
|first1=Sacha
|title=Calendars in Antiquity: Empires, States and Societies
|date=2012
|publisher=Oxford University Press}}