Almost everyone knows their birthday which comes once a year and is based on the Gregorian calendar introduced with Christianity, but is this the real birth day? Does this day have the same astronomical quality as the day you were born? Nope.
In Vedic times the birthday was (and still is) celebrated when:
(b) The moon has returned to the same degree as when you were born.
We are working on an online calculator for your Vedic birthday so watch this space.