#calendar system

Hand painted illustration of the Mansions of the Moon pasted to the inner board of Francis Barrett’s ‘The Magus’ manuscript 1801

A lunar mansion, is a segment of the apparent path of the moon in its orbit around the earth. These mansions were often used by ancient cultures as part of their calendar system. But what qualifies them as one of those easily identifiable foreign elements is that their names were assimilated by Latin astrological texts maintaining their Arabic form: Alnath, Albotain, Aldebaran.

After spending the whole afternoon developing a dating and calendar system for the Mando-centric fic I’m currently writing, I ended up with not one, but two different systems (and some headcanons about the Galactic Republic dating system).

For simplicity’s sake let’s assume the Galactic Republic uses predominantly the year of the Ruusan Reformation epoch for their dating system. The year 0 ARR (After the Ruusan Reformation) corresponds to the year 1000 BBY (Before the Battle of Yavin). The calendar system is the Coruscant-based standard one with the year’s length being 368 days. The date notation is yyyy.ddd (e.g. 948.126 ARR is the 126th day of the year 948 After the Ruusan Reformation).

Mandalore was founded in 9991 BBY so they began their dating system with the Founding of Mandalore (FoM). I headcanon the Taungs decided to keep their calendar system unchanged after leaving Coruscant and eventually colonizing Mandalore which means a Mandalorian year has 368 days just like the Galactic Republic one. Unlike the latter, however, the Mandalorian year begins 67 days later (e.g. 9253.1 FoM, the first day of the year 9253 since the Founding of Mandalore would be 262.68 ARR). 

Why a 67 days discrepancy? It would be weirder if they were synchronised.

Since I cannot imagine the New Mandalorians would want to use the FoM as their dating system, and considering the movement began after the Mandalorian Excision, the New Mandalorian Calendar (NMC) system will use the Excision (738 BBY, 262 ARR, 9253 FoM) as year 0. The length of the year and the New Year are identical to the traditional Mandalorian calendar system.

So basically

0 BBY = 9991 FoM = 738 NMC = 1000 ARR

Cheat sheet:

BBY: Before the Battle of Yavin

FoM: Foundation of Mandalore

NMC: New Mandalorian Calendar

ARR: After the Ruusan Reformation

Some notable dates of Legend/Disney canon events in the various dating systems:

934 ARR (9925 FoM, 672 NMC, 66 BBY) Jango Fett is born

940 ARR (9931 FoM, 678 NMC, 60 BBY) the Mandalorian Civil War begins

943 ARR (9934 FoM, 681 NMC, 57 BBY) Obi-wan Kenobi is born

948 ARR (9939 FoM, 686 NMC, 52 BBY) the Battle of Korda VI is fought; Sheev Palpatine is elected Senator

955 ARR (9946 FoM, 693 NMC, 45 BBY) Obi-wan Kenobi becomes Master Jinn’s padawan

956 ARR (9947 FoM, 694 NMC, 44 BBY) the Battle of Galidraan is fought; the Stark Hyperspace War begins

959 ARR (9950 FoM, 697 NMC, 41 BBY) Anakin Skywalker is born

I already have one going! Some of the dates on it are slightly more tentative than others, but I've got a pretty good idea on the chronology of events within the Redux (both past and future).

Now that I'm thinking about it, I should probably clarify how the Redux handles time.

The de facto international standard used by Remnant is the Bellic calendar, a solar model with a 12-month, 365.25-day system. (Very original, I know.)

Where the Bellic calendar differs from the Gregorian/Common Era calendar is the inclusion of three distinct eras: the antebellum (AB), all time that preceded the start of the Great War; the intrabellum (IB), the 10-year period during which the war was fought; and the postbellum (PB), the last 80 years since the war ended. The Bellic calendar was created as a way to standardize time, as prior to then, all of Remnant's great powers (along with a handful of city-states, autonomous cultures, and other independent entities) used their own calendar systems. The universal decision to adopt a civil calendar helped expedite the ease of trade, global communication, and political affairs. Alternative calendar systems do exist or linger, but they tend to coincide with the Bellic system, rather than supplant it.

Here's one for you DM's that want a unique calendar/seasons system

The world sees the changing of times as within only 3 seasons. The Three seasons go in this order. Season of rejuvenation, season of stagnation, season of Expiry. Each season lasts about ninety days & all have different weather & magical effects.

Season of rejuvenation: This is the time when in our world it would go from winter to early summer. This season is marked with increasing temperature, & the awakening of many magical animals. It's not uncommon for entire magical forests to come to life after a single warm day. Healing spells are more effective during this season

Season of stagnation: This is the time when in our world it would just be summer. It is marked by thunderstorms, tornados, & other radical weather events. Any magical creatures the require a good amount of time to form, will  usually form during this session. The season temperature stays within the same range of 60 to 80 degrees. Elemental spells are more effective during this season

Archaeologists have found that a straight stone causeway on Mount Ttlaloc in Mexico aligns with the rising sun on February 23rd/24th.

The long causeway at the summit strongly suggests that the ceremonial structure was used as a solar landmark, aligning very precisely with the rising sun on February 23 to 24 and October 19 to 20. The same alignment is found if Mount Tlaloc is viewed from Mount Tepeyac, a holy site whose use as a sacred mount and solar observation post preceded the establishment of the Mexica civilization in the Basin.”

The mountain was worshiped by the Aztecs, who associated it with the rain god Tlaloc as one of his earthly dwelling places, called Tlalocan.

Extravagant ceremonies, plentiful offerings, and the lives of young Mesoamericans were all offered to Tlaloc in order to appease him at the beginning of the rain season.