The Foundation Everything Else Rests On
Why Birth Time Matters So Much
Last updated: 04 Oct 2026
It matters a great deal. The Ascendant changes every two hours, and even a few minutes difference can shift the Moon to a different nakshatra, which directly affects all eight Guna Milan scores. Even small inaccuracies can alter the matching result.
An astrologer can perform birth time rectification using key life events to narrow down the probable birth time. Alternatively, the Moon sign and nakshatra — which are less time-sensitive — can still be used for the Guna Milan calculation.
Yes. The geographic coordinates of the birthplace determine the local sidereal time, which affects the Ascendant calculation. Even being a few hundred kilometers away from the actual birthplace can slightly alter the chart.
Yes, a Kundali drawn at birth by a family astrologer is usually the most reliable starting point. It typically reflects the birth time as known to the family at that time and is the most historically accurate reference available.
Yes, with limitations. Astrologers work with approximate times or focus on the Moon sign and nakshatra when exact birth time is unavailable. The result is less precise but can still provide meaningful compatibility insights.
Birth time should be recorded in Indian Standard Time (IST) for births within India. For births abroad, the local time at the place of birth is used, and the astrologer converts it appropriately to calculate the chart.