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Flashcards in Calendars Deck (28):
1

Astronomical cycles

Days
Months
Years

2

Days

Earth's rotation on its axis

3

Months

Revolution of the moon around the earth

4

Years

Revolution of the earth around the sun

5

Types of years

Tropical
Lunar
Lunisolar

6

Tropical year

Interval Between Vernal Equinoxes: 365.242

7

Solar

Twelve Synodic Lunar Phases: 365.367

8

Lunisolar

Mechanical Division of Sequences: 365

9

Calendar systems

Solar
Lunar
Lunisolar

10

Solar system

Synchrony with the Tropical year
Days intercalated to form leap years
Examples: Gregorian and Julian

11

Lunar system

Follows lunar phases without seasons
Months shift per annum
Examples: Islamic and Zoroastrian

12

Lunisolar system

Months based on lunar phases
Interlaced to synchronize seasonally
Examples: Hebrew and Chinese

13

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.

14

"Every day that passes should be lived in light of the past, in light of the future, and in light of eternity."

Thomas Chalmers

15

Julius devised intercalary synchrony

45 bc

16

Gospel year first in evidence

124 ad

17

Dionysius Exigus devised AD system

532

18

Venerable Bede devised BC system

728

19

Pius V introduced breviary adjustments

1568

20

Gregory XIII issued Inter Gravissimus

1582

21

Jacques Cassini devised astronomical system

1740

22

Gregorian calendar accepted in UK

1751

23

OT days...

Morning: dawn, morn, midday
Afternoon: dark, evening
Night: the three watches

24

OT weeks

Sabbath and attendant service

25

OT year...

Feasts, fasts and festivals

26

NT weeks

Lord's day and sacraments

27

NT year...

Yuletide: advent, Christmas, Epiphany
Lententide: lent, Easter
Ascension and Pentecost

28

Christian approach to stewardship

I am not the owner, just the manager...everything belongs to God