This Calender system is based on 19 years Metonic cycle, specially modified and it is called Siddharth Chakra. Below is the table of this Improvd Siddharth Cycle Table comprising 235 Lunar months in 7 Columns. Every column contains one extra month called “Maitreya” i.e. मैत्रेय.
Let’s write each year of our Siddhartha Cycle chart of 7 Columns in a new chart of 13 Rows (1 per lunar Month) and 19 columns (1 per year). This chart is the Siddhartha Cycle 19 Year Column Chart, which will look something like the following.
Quick Reference Guide for Bodhi Samvachara
- Bodhi Samvachhar begins on Sunday, Tej Prathama Vaisakha Bodhi Samvachhar 0001, which is April 18, 516 BCE, according to global chronology. (CE)
- The lunar month begins on the day after the new moon and ends on the next new moon. (Amanta lunar month)
- Each lunar month will have two parts: Tej Paksha (bright phase) from the new moon to the full moon, and Tama Paksha (dark phase) from the full moon to the next new moon. A year consists of 12 such months.
- The months of Vaisakha, Ashadha, Bhadrapada, Kartik, Paush, Phalguna, and Maitreya will have 30 days.
- The months of Jyeshtha, Shravan, Ashwin, Agrahana (Margashirsha), Magha, and Chaitra will have 29 days. There will be No Tama Ashtami in these months.
- The 19-year cycle will be called the Siddhartha Chakra and will contain 235 lunar months.
- The Siddhartha Chakra will have seven parts, each part called a Maitreya Stambha. Maitreya Stambhas one through seven will have 34 and 33 lunar months alternately, and each Maitreya Stambha will have one Maitreya month.
- The position of Maitreya month in which Samvachar will be calculated from the previous Samvachar number (as per the Siddhartha Cycle 19-year table) using the following rules:
- (Samvachar number – 1) @ ÷ 19. Note down remainder value after division in integer value only. [@ – This calculation is the number of complete Years passed till the desired date.]
- If the remainder is 0, the fifth month will be Maitreya month.
- If the remainder is 3, the second month will be Maitreya month.
- If the remainder is 5, the tenth month will be Maitreya month.
- If the remainder is 8, the seventh month will be Maitreya month.
- If the remainder is 11, the third month will be Maitreya month.
- If the remainder is 14, the second month will be Maitreya month.
- If the remainder is 16, the tenth month will be Maitreya month.
- If there is any other remainder, there will be no Maitreya month in that Year.
Ashok Samvachhar Calculation
10. If the last digit of the running Samvachhar is 0 or 5, then this Samvachhar will be an Ashoka Samvachhar.
11. If the last two digits of the running Samvachhar are 00, then this Samvachhar will not be an Ashoka Samvachhar even if the last digit is 0.
12. If the last three digits of the running Samvachhar are 200, 400, 600, or 800, then this Samvachhar will be an Ashoka Samvachhar even if the last two digits are 00. (That is, if the last three digits are 100, 300, 500, 700, 900, and 000, then this Samvachhar will not be an Ashoka Samvachhar.)
13. In the Ashoka Samvachhar, the month of Chaitra will have 30 days instead of 29.
14. The total number of days from the Epoch (start day of the Bodhi Samvachhar) to any day will be called Bodhi Dinank.
The basic concept of the Ashoka Samvachhar
To align the Bodhi Samvachhar Calendar of 12 Lunar Months with Solar Calendar of 365.2425 solar days, more precisely, one day is added in “Chaitra” month of some years. These years are called Ashok Samvachhar.
There will be 19 Ashoka Samvachhars every 100 years (1 per 5 years block), and 2 Ashoka Samvachhars will be added every 500 years. That is, (total Samvachhars ÷ 5) – total century + (total Samvachhars ÷ 500) x 2. This number will be the same as the total Ashoka Samvachhar. (Integers only)
The concept of Bodhi Dinank
Similar to the Julian day number in global temporal chronology. Julian day number is the number of days from January 1, 4713 BC, to the desired Christian date. Bodhi Dinank is the number of days from April 18, 516 BC, to the desired day.
The Bodhi Dinank (Number) for any date in any Bodhi Samvachhar is very useful for us. It is also used to find out the week day (day) of any Bodhi Samvachhar date.
Any normal Samvachhar has 354 days. A normal Ashoka Samvachhar has 355 days. If the Samvachhar has Maitreya month, then that Samvachhar has 384 days. If the Ashoka Samvachhar has Maitreya month, then that Samvachhar has 385 days.
The complete details of this system is available in a PDF file “Bodhi Samvachhar” on back page.
पियदसि असोक 