Ardha Nadiamsa/Vighati Graha Calculations

[Guest guest]

Om Namo Bhagavate Vasudavaya

 

Dear Sanjayji and All,

 

Thank you for posting this fascinating article on Ardha Nadiamsa.

 

I had a couple of questions regarding calculation of ardha nadiamsa graha and

vighati graha.

 

1. In calculating ardha nadiamsa graha and janma vighatika graha, the number

is always rounded UP to the next integer. This is my understanding from

Jaimini's Sutra 8 which states: " The remainder is to be increased to the next

higher integer. " So regardless of whether the remainder is greater than 0.5 or

less than 0.5, the remainder is always rounded UP to the next integer. Is this

correct?

 

This would make sense in cases where the integer is zero. For example, if

the graha is at 0:00 degrees (00 degrees, 00 minutes), the remainder is zero, so

the ardha nadiamsa can only be rounded UP to 1.

 

2. Is there a quicker, easier way to convert minutes and seconds to

fraction-of-an-hour in decimals when calculating vighati graha? I have been

converting

hrs/min/sec to total seconds and then dividing total seconds by 3600 (number

of seconds in an hour) to convert hrs/min/sec to a decimal.

I am using the following formula:

(hours x 3600) + (minutes x 60) + seconds = total seconds

Total seconds divided by 3600 = hours and fraction-of-an-hour expressed as

decimal.

 

Is this formula correct? Or is there an easier " shortcut " way to calculate

this?

 

3. My understanding is that vighati graha is calculated from the time elapsed

between sunrise/sunset and birthtime in hours, whereas ardha nadiamsa graha

is calculated directly from the degree of the graha. The vighati graha cannot

be calculated directly from the degree of the lagna, but only from the time

between sunrise (or sunset) and the birth time. Is this correct?

 

Example for Vighati Graha Calculation:

Sunset is at 18:48:31. Birth time is at 1:43 AM (next calendar day).

Birth time from sunset is 6hrs, 54 min, 29 sec, or 6.908055556 hours.

6.908055556 hrs x 150 = 1036.208333 (BTV)

1036.208333 (BTV) divided by 9 = 115.1342593

Remainder is 0.1342593 x 9 = 1.208333

1.208333 is rounded UP to 2.

Vighati Graha is Moon.

 

Is this example correctly calculated?

 

Thank you for your reply to my questions. I wanted to make sure that my

calculations are accurate before examining results. Please correct any errors I

have made in calculations or in understanding.

 

Thanks! :-)

 

Best Wishes,

 

Susan