Flashcards in Calendars Deck (28):
Earth's rotation on its axis
Revolution of the moon around the earth
Revolution of the earth around the sun
Types of years
Interval Between Vernal Equinoxes: 365.242
Twelve Synodic Lunar Phases: 365.367
Mechanical Division of Sequences: 365
Synchrony with the Tropical year
Days intercalated to form leap years
Examples: Gregorian and Julian
Follows lunar phases without seasons
Months shift per annum
Examples: Islamic and Zoroastrian
Months based on lunar phases
Interlaced to synchronize seasonally
Examples: Hebrew and Chinese
Why do we need to know about calendars etc.?
The way we view time tells us much about our worldview.
How we measure our time helps us to know what to do with our time.
we must be intentional about the way we view and organize our time.
"Every day that passes should be lived in light of the past, in light of the future, and in light of eternity."
Julius devised intercalary synchrony
Gospel year first in evidence
Dionysius Exigus devised AD system
Venerable Bede devised BC system
Pius V introduced breviary adjustments
Gregory XIII issued Inter Gravissimus
Jacques Cassini devised astronomical system
Gregorian calendar accepted in UK
Morning: dawn, morn, midday
Afternoon: dark, evening
Night: the three watches
Sabbath and attendant service
Feasts, fasts and festivals
Lord's day and sacraments
Yuletide: advent, Christmas, Epiphany
Lententide: lent, Easter
Ascension and Pentecost