3. Constellation Calendar
In 1930, the International Astronomer’s Union defined the boundaries of the Constellations of the Zodiac, and reintroduced the Constellation of Ophiuchus, bringing the total up to 13.
The Constellations so defined are those across which the Sun appears to travel in its journey through our skies. The dates on which the Sun passes across a boundary into a new Constellation differs from those of the astrological Zodiac, which have no direct relation to the Constellations themselves. Further, due to the Precession of the Equinoxes, the date on which the Sun passes each boundaries shifts one Day later every 71~72 Years or so.
Table 4.1 displays the Constellations, their symbols and the dates on which the Sun passes the boundaries into them (as revised by theAbysmal Calendar) and the number of Days the Sun takes to pass through each.
TABLE 4.1
| Constellation | Symbol | Begins | Duration |
|---|---|---|---|
| Aries |  |
Apr 20 | 25 days |
| Taurus |  |
May 15 | 37 days |
| Gemini |  |
Jun 21 | 31 days |
| Cancer |  |
Jul 22 | 20 days |
| Leo |  |
Aug 11 | 37 days |
| Virgo |  |
Sep 17 | 45 days |
| Libra |  |
Nov 1 | 23 days |
| Scorpio |  |
Nov 24 | 7 days |
| Ophiuchus (Eagle) |  |
Dec 1 | 18 days |
| Sagittarius |  |
Dec 19 | 32 days |
| Capricorn |  |
Jan 20 | 28 days |
| Aquarius |  |
Feb 17 | 24 days |
| Pisces |  |
Mar 13 | 38 days |
the rate of the Precession varies, although it takes 25,772 Years or so to complete one full cycle. theAbysmal Calendar includes an observation~based component to allow Calendar users to track the Precession across the generations.
the projected start point occurs when the Sun passes the boundary into Aries on New Year’s Day.
Months and the Zodiac
Attributing the Constellations of the Zodiac to the Months of the Year may assist to this end. If Month 0 were assigned the Constellation Aries, Month 1 Taurus and so on, theAbysmal Calendar would align itself against the stellar Constellations as follows:
0. the Chromatic Counter
1. theAbysmal Solar Calendar
2. the 13~XX Calendar
3. Constellation Calendar
4. Calendar Synchronicity & Symmetry
5. Case for Calendar Reform
6. Calendar Pages
7. Year 0
