1. theAbysmal Solar Calendar
theAbysmal Solar Calendar follows the structure of proposed 13-Month Calendars such as theĀ International Fixed Calendar.
theAbysmal Calendar divides the Tropical Year of 365.242 189 670 Days into 365 Days plus 1 Leap Year Day.
Each Day consists of 86 400 seconds, grouped into 24 hours of 60 minutes of 60 seconds.
theAbysmal Calendar defines 3 types of Day for the purposes of elegant organization:
the Weekday
the New Year’s Day
the Leap Year Day
theAbysmal Calendar observes 52 Weeks, thus 364 Weekdays and the New Year’s Day every Year. It includes the Leap Year Day once every 4 Years, with an exception every 128 Years, when the Calendar excludes it. This most closely aligns theAbysmal Calendar Year with the Tropical Year.
theAbysmal Calendar arranges the 52 Weeks into
13 Months of 4 Weeks (28 Days)
4 Quarters of 13 Weeks (91 Days)
theAbysmal Calendar’s Week progresses as
Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday
theAbysmal Calendar numbers the
Days of the Year 0~364
Weeks 0~51
Months 0~12
Days of the Month 0~27
Quarters 0~3
Days of the Quarter 0~90
With the exception of Weekdays, which have already established themselves globally, theAbysmal Calendar leaves the naming of the Months, Quarters and Years up to each community of Calendar users, that they might choose something culturally appropriate.
theAbysmal Calendar’s New Year Day falls on the Day currently acknowledged as December 21st. When a Leap Year Day occurs, it falls the Day before the New Year Day. Neither of these Days have a Weekday designation.
Symmetries of the 52~Week Year

theAbysmal Calendar mapped to the Gregorian
Weekdays, Months, Quarters, Years
Each Week begins on Saturday and ends Friday
Each Month begins on Saturday and ends Friday
Each Quarter begins on Saturday and ends Friday
Each Year begins on Saturday and ends Friday
Hours, Days, Weeks
since their ancient origins, calendar observers have associated the 7 ancient Planets (celestial bodies visible with the naked eye) to the weekdays. Table 1.1 illustrates the association between the Weekday, Planet, Symbol, and period of orbit.
TABLE 1.1
|
Saturn
|
Jupiter
|
Mars
|
Sun
|
Venus
|
Mercury
|
Moon
|
|
|
|
|
|
|
|
|
|
29.5 Yrs
|
11.9 Yrs
|
687 Days
|
365 Days
|
225 Days
|
88 Days
|
29.53 Days
|
|
Saturday
|
Thursday
|
Tuesday
|
Sunday
|
Friday
|
Wednesday
|
Monday
|
Arranging the Symbols around a circle in order of their orbital period creates a 7~pointed star as below.

Hexagram
Following the Planets according to the lines of the star, beginning with Saturn in the bottom left, follows the order of the Weekdays.
Assigning a Planet to each hour of the Day in the order described around the outside of the circle (clockwise), creates a symmetry between the hours and the Weekdays. The first hour of each Day, i.e. hour 0, coincides with the Weekday in which it occurs.
The columns below follow the 7 Planets for the 24-Hours of the Day. The first hour of each Day determines the order of the Weekdays, beginning with Saturn, thus Saturday.
TABLE 1.2
| h | Sat | Sun | Mon | Tue | Wed | Thu | Fri |
|---|---|---|---|---|---|---|---|
| 0 | Saturn | Sun | Moon | Mars | Mercury | Jupiter | Venus |
| 1 | Jupiter | Venus | Saturn | Sun | Moon | Mars | Mercury |
| 2 | Mars | Mercury | Jupiter | Venus | Saturn | Sun | Moon |
| 3 | Sun | Moon | Mars | Mercury | Jupiter | Venus | Saturn |
| 4 | Venus | Saturn | Sun | Moon | Mars | Mercury | Jupiter |
| 5 | Mercury | Jupiter | Venus | Saturn | Sun | Moon | Mars |
| 6 | Moon | Mars | Mercury | Jupiter | Venus | Saturn | Sun |
| 7 | Saturn | Sun | Moon | Mars | Mercury | Jupiter | Venus |
| 8 | Jupiter | Venus | Saturn | Sun | Moon | Mars | Mercury |
| 9 | Mars | Mercury | Jupiter | Venus | Saturn | Sun | Moon |
| 10 | Sun | Moon | Mars | Mercury | Jupiter | Venus | Saturn |
| 11 | Venus | Saturn | Sun | Moon | Mars | Mercury | Jupiter |
| 12 | Mercury | Jupiter | Venus | Saturn | Sun | Moon | Mars |
| 13 | Moon | Mars | Mercury | Jupiter | Venus | Saturn | Sun |
| 14 | Saturn | Sun | Moon | Mars | Mercury | Jupiter | Venus |
| 15 | Jupiter | Venus | Saturn | Sun | Moon | Mars | Mercury |
| 16 | Mars | Mercury | Jupiter | Venus | Saturn | Sun | Moon |
| 17 | Sun | Moon | Mars | Mercury | Jupiter | Venus | Saturn |
| 18 | Venus | Saturn | Sun | Moon | Mars | Mercury | Jupiter |
| 19 | Mercury | Jupiter | Venus | Saturn | Sun | Moon | Mars |
| 20 | Moon | Mars | Mercury | Jupiter | Venus | Saturn | Sun |
| 21 | Saturn | Sun | Moon | Mars | Mercury | Jupiter | Venus |
| 22 | Jupiter | Venus | Saturn | Sun | Moon | Mars | Mercury |
| 23 | Mars | Mercury | Jupiter | Venus | Saturn | Sun | Moon |
the Quarters, the Seasons
Between the Tropics of Cancer and Capricorn, the amount of daylight changes very little throughout the Year. In the Northern and Southern Hemispheres, the amount of daylight varies increasingly as one approaches the poles. The illustration belowdisplays the relative amount of daylight at 50 degrees of Latitude, where the darkest circle represents the Winter Solstice (the longest night), the lightest the Summer (the longest day) Solstice.
TheAbysmal Calendar’s Quarters fall on or about each of the Cardinal Points: the Winter Solstice, the Vernal Equinox, the Summer Solstice and the Autumnal Equinox.

the Midway Days & the Wheel of the Year
the 4 Midway Days of each Quarter also form symmetry within the Week, the Month and the Quarter. The Midway Days fall 45 Days after the beginning and 45 Days before the end of each Quarter. They also fall on Tuesday, the midpoint of the Week, with 3 Days before and 3 Days after.
the Days that begin and end each Quarter and the Midway Days together form a symmetrical Wheel of the Year 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
