A stands for Ascenscion Oblique,
Angular distance along the Ecliptic.
A stands for Ascensional Difference, Chara,
Difference between Right & Oblique Ascensions.
A stands for the Anomalistic Period,
The circuit made by a plenet,
The 360 day journey of the planet,
From Perihelion Point to Perihelion Point.
A stands for Ahargana, days elapsed from Kali
Yuga Start,
Kali Yuga started from 18 Feb, 3102 BCE.
Ahargana works out be 1871115 on 01012022,
And Ephemeris software computes Ahargana for
each day.
In order to compute the Luni Solar Calander,
Saka Era,
Compute Kalyad Ahargana first,
Ahargana on 07042016 was 1869021,
And it was 1938 Era in the Luni Solar Calender.
In order to compute the Vikram Samvat,
Add 56+78 to the Saka Era.
Then you get the Vikramaditya Era,
Also luni-solar.
This formidable number, Ahargana,
Is the basis of all Indian Calculations,
In order to compute Buddhist Era,
Compute both Buddhist and Kalyad Aharganas.
Find out the difference of both Aharganas,
Find out the Kalyad Ahargana for the day.
Deduct the difference form Kalyad Ahargana,
And divide the figure by 365.25
In order to find out the Masonic Era,
Add 4000 to the Gregorian,
Result is the Masonic Era,
In the AL, Year of Light, Anno Lucis.