Calendars and related questions

• Gregorian Calendar
  • Les textes constitutifs du calendrier grégorien (in French, original texts in Latin), by Rodolphe Audette. Very important site!!
  • Gregorii XIII Inter Gravissimas (in Latin, French and English)
  • Inter Gravissimas di Gregorio XIII (la prima traduzione italiana disponibile sul web). Questa bolla fu accompagnata da sei canoni esplicativi, di cui ecco la traduzione: Gli originali sono sul sito di Rodolphe Audette.
    • Canone 1: Il ciclo diciannovennale del numero d'oro.
    • Canone 2: Le epatte e i noviluni.
    • Canone 3: Il ciclo solare, ovvero il ciclo di 28 anni delle lettere domenicali
    • Canone 4: La lettera domenicale
    • Canone 5: L'indizione
    • Canone 6: Le feste mobili
  • Littera Martyrologii, Letter of Martyrology, Lettera del Martirologio (in Italian)
  • Epact, article of the Catholoc Encyclopedia 
  • Come calcolare la data della Pasqua (in Italian)
  • When was the Gregorian calendar adopted? Variuos pages respond.
     Quando fu adottato il calendario gregoriano? Varie pagine rispondono,
    • Page 1
    • Page 2
    • Page 3
    • A summary page on this site / la versione italiana comparirà presto.
• Il Calendario di Eugenio Songia (in Italian)
• Calendars, by L.E.Doggett
• CALNDR-L, an email forum on calendars
• Calendar Studies at www.hermetic.ch. See in particular several documents provided by Simon Cassidy
• FAQ on Calendars
• L'entrata del Sole nelle costellazioni dello Zodiaco   
• The Perpetual Calendar by Toke Nørby
• The Synoptical Julian-Gregorian Calendars (other interesting stuff on this site)
• Calendar Trivia
• The Julian and Gregorian Calendars, by Peter Meyer
• Calendar & Easter Topics
• Easter-Date FAQ
• Italian standard time (ora esatta) 
• Calculation of the Ecclesiastical Calendar
• Ecclesiastical Calendar: Enter a Year...   
• Notes on the Orthodox Ecclesiastical Calendar   
• A Simplified Easter Dating Method     
• Easter Dating Method, by Ronald W. Mallen
• Multi-Year Calendar (a calculator)
• Calendario Ecclesiastico Ortodosso 2003
• Stella di Betlemme (in Italian), Star of Betlehem  (in English)
• Is Mira the Betlehem Star? Read this article by Costantino Sigismondi
• Zodiac67, a program by Dan Censor, giving sunrises, sunsets, moon phases, eclipses, calendric conversions etc.; works under MS-DOS or in the Command Window of Win.
  • can be found at varies software repositories, such at this, this and this
  • or at author's site
  • note in particular the very interesting article on Hebrew calendar, contained in the package.
• Calendario dell'antica Roma
• El calendàrio romano [in Spanish]
• Roman Chronology
  • Fasti Consulares (509-27 BC)
  • Roman Dates and Fasti Consulares (300 BC- 60 AD)
  • Konsularlisten (Fasti Consulares: 509 V.Chr.- 541 N. Chr.)

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