Two Ways of Calculating a Life Path

One life-path method reduces the month, the day, and the year to digits separately, and it may let 11 or 22 stand at that step before the final addition. The other method adds every digit of the full date into one total, then reduces. Because 11 and 22 are allowed to survive in the first method and are broken into 2 or 4 in the second, the final digit can differ. The argument is about master numbers, not about the sky.

Vimshottari does not use either sum. It sets the opening mahadasha from the Moon's nakshatra, and the balance from how much of that nakshatra is still ahead of the Moon. A fraction of a star is not a digit of a birthday.

If one method gives 11 and the other gives 2, you have learned that the methods disagree. You have not learned the lagna, the 7th lord, or whether Venus is exalted in Pisces or debilitated in Virgo. Choosing the method that sounds kinder does not change the mahadasha in force. Saturn still lasts 19 years if Saturn is the lord running, whichever digit you keep.

People treat the disagreement as a mystery of destiny. It is a rule about when to stop adding. State the rule you used, and stop.

For a Jyotish question, calculate the sidereal lagna from the city, the time, and the zone offset, including daylight saving. Then note the Moon's nakshatra and its lord. That lord's years are the opening period. The life-path digit can sit beside those facts as a calendar curiosity.

If you must pick one numerology method, pick it because you will keep 11 and 22 or because you will not, and apply it consistently. Do not average the two digits. An average is a third system nobody's book defined.