Universal Celestial Calendar

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About The UCC


The Universal Celestial Calendar (UCC) is derived from a combination of 2 main Ancient Symbols

The Solar Cross & The Zodiac Cross

Summary Graphic

The Solar Cross (left) + The Zodiac Cross (centre) = The UCC Year (right)

The Solar Cross

Solar Celtic Cross

This is the ancient Solar Cross with its '4 around 1' configuration.
This is also known as The Celtic Cross and can be seen at many many ancient sites around the planet
The symbols for the Earth '⊕' and the Sun '☉' can both be seen in the Solar Cross
The Solar Cross shows the orbit of the Earth around the Sun at point No.1 with its 2 Equinoxes & 2 Solstices
We can number the 4 other points of the cross from a Northern Hemisphere perspective as follows:
2 = The Spring Equinox
3 = The Summer Solstice
4 = The Autumn Equinox
5 = The Winter Solstice
This cycle is shown below with the 2 Solstices to the left and right

The Four Seasons  

The Equinoxes & Solstices create the 4 Seasons

Together with the Sun at the centre they give us 5 Special Days each year (4+1=5)


And of course Earth's orbit is made up of 360° as in any circle

This gives us 360 Standard Days - One Day for each Degree of the orbit

360 Standard Days


5 Special Days

Gives us 365 Days in a Standard (non Leap) Year


How Is A Standard UCC Year Divided Up?

To answer this let's look at the other Ancient Symbol


The Zodiac Cross

Zodiac Cross

   This is the Zodiac Cross which shows the 12 'Sun Signs' of Tropical Astrology with their symbols & glyphs

on the Solar Cross of the 4 Seasons: Q1 / Q2 / Q3 / Q4

and the positions of the 5 Special Days


8 Seasonal Festivals

The 4 Quarters/Seasons each have 2 Festivals:

A 'Cardinal' Festival to celebrate the Start of each Season with:

Aries♈  |  Cancer♋  |  Libra♎  |  Capricorn♑


A Mid Season Festival to celebrate their Mid Points in the middle of:

Taurus♉  |  Leo♌  |  Scorpio♏  |  Aquarius♒


The Sun Signs & 'Triads' 

The 12 'Sun Signs' correspond closely to 'Triad' months in the 4 Quarters of the UCC

Q1 Q2 Q3 Q4
1. Aries♈ ('Ram') 4. Cancer♋ ('Crab') 7. Libra♎ ('Scales') 10. Capricorn♑ ('Sea Goat')
2. Taurus♉ ('Bull') 5. Leo♌ ('Lion') 8. Scorpio♏ ('Scorpion') 11. Aquarius♒ ('Water Bearer')
3. Gemini♊ ('Twins') 6. Virgo♍ ('Virgin') 9. Sagittarius♐ ('Archer') 12. Pisces♓ ('Fishes')

The Western Tropical Zodiac of 'Sun Signs' is actually our Ancient Seasonal Calendar!

Their equivalent Zodiac Constellations are shown in (brackets) in the table

(For some interesting facts and images about the Zodiac Sign/Months and our Orbit see THIS BLOG)


These 12 Triads divide the 360° of the orbit and its 360 Standard Days into Twelve 30° Segments of 30 Standard Days

This gives us 12 'months' in the year each of exactly 30 Standard Days


What Is A 'Triad'?

Each Quarter/Season has 3 of the 12 Sun Sign 'months'

Each of these 'months' is also split into 3 equal sections (see 'Decans' below)

I call the 12 Sun Sign segments 'Triads' instead of 'months'

This is due to their '3 above' (3 Triads per Quarter) x '3 below' (3 Decans per Triad) nature

(Triad means 'group of three')

(The term 'month' is not really appropriate as it comes from 'Moon-th' and is based on the roughly 28/29 Day cycle of our Moon through the Zodiac)



As you can see the Zodiac starts with the Sign Aries 'The Ram' with its symbol '♈'

Zodiac Cross Quarter 1

Aries♈ begins at the Northern Hemisphere Spring (Vernal) Equinox

This is actually still known as 'The 1st Point of Aries' in Astronomy

(circa March 20th/21st in the Gregorian Calendar)

So this is also when the UCC Year begins


Triad Names

The Triads are then named after their NUMBER in the Zodiac cycle plus its respective Sun Sign Name & Symbol:

ONE-Aries♈, TWO-Taurus♉, THREE-Gemini♊ and so on...

Either the Number or the Symbol can then be used as an abbreviation for the Triad in question:

1 or ♈ , 2 or ♉ , 3 or ♊ etc.

To learn more about how the UCC Triads work and relate to the Zodiac in astronomy and astrology take a look at the page for the First Triad 'ONE-Aries♈'


How Are The Triad 'Months' Divided Up?

The answer to this is based on the structure of our Solar System

   The 10 Day 'Decan'

As you can see there are 10 main elements in our Solar System

These are The Sun at the centre and the 9 Major Orbits of:



Earth (with its Moon)


The Asteroid Belt (with its main orb Ceres)






The Gregorian Calendar has a 7 Day Week based on a day for each of the orbs visible from Earth with the naked eye;

Sun, Moon, Mercury, Venus, Mars, Jupiter & Saturn

But does not include The Asteroid Belt, Uranus or Neptune


What Is A 'Decan'?

The UCC has a 10 Day Week called a 'Decan'

This has 1 Standard Day for each of the 10 main elements of the Solar System

Decan means 'group of ten'

There are 3 of these Decans in each Triad making up its 30 Standard Days

And so there are 36 Decans in the UCC Year (36 x 10 Standard Days = 360 Standard Days)


Therefore the Calendar is very easy to use as EVERY Triad looks exactly the same with its 3 Decans:

The Standard Triad                      (like a month) of 30 Days 

[The Symbols above each Day are those of The Sun and the Planets of its 9 major orbits]

12 of these Triads make up the 360 Standard Days of the year

We can use the same template for EVERY Triad 'month' of the year

And it's EASY to figure out the number of days between two dates as EVERY Triad has the same 30 Day structure


The UCC Year

So, the combination of the 5 Special Days of the Solar Cross


the 360 Standard Days of the Zodiac Cross

produces the following Calendar Year graphic:

UCC Logo 

This shows

The 4 x 90 Day 'Quarters' (Seasons) in Yellow

The 12 x 30 Day 'Triads' in Green

The 360 Standard Days in White

The 36 x 10 Day 'Decans' in Red

The Zodiac symbols are also shown around the edge

These can be used as abbreviations for the names of our 12 Triads


What Are 'Intercalary' Days?

The 5 Special 'Intercalary' Days of the Solar Cross are shown on the above graphic

These are:

Day No.1 in the centre in Yellow for The Sun

Days 2, 3, 4 & 5 in Blue around the edge for the Equinoxes & Solstice which start each Quarter/Season

They are called 'Intercalary' Days meaning 'days out of the standard calendar cycle'

So we pause for a day at these points before commencing the next Triad & Quarter/Season

The Special Intercalary Days 'Balance' the UCC Year into its 4 'Geometrical' Quarters of exactly 90 Standard Days each

(The 'Natural' seasons are slightly different lengths due to the Earth's elliptical orbit)


How Do Leap Years Work?

The UCC uses a system of 8 Leap Years in a 33 Year cycle

In Leap Years an additional (6th) Intercalary Day is inserted at the start of the year as 'Day Zero'

This keeps the day numbers the same for both Standard (Non Leap) Years AND Leap Years

Click here for full details about the Leap Year system


Symbolic Ancient Synchronicity?

Having developed the UCC I later came across this archaic 'Mexican' Calendar on Wikipedia

Archaic Mexican Calendar

I took this as a good sign that I was on the right track!

Rather than creating something new I feel that I have merely rediscovered some forgotten ancient knowledge...


For much more detail, including how the UCC year numbering system works, please visit the

UCC Wiki

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© Universal Celestial Calendar 13512 UCC (2012 Gregorian) Onwards