Convert between Gregorian and Hindu lunar dates (sunrise convention, Purnimanta month names; Amanta shown alongside).
Pick a date and a city. The Hindu day is named by the tithi at that city’s sunrise, so the same date can carry a different tithi in a distant time zone.
Why do Amanta and Purnimanta months differ?
In Krishna Paksha the Purnimanta name runs one month ahead of the Amanta name; in Shukla Paksha both agree. The result always shows both.
Why is a converted Amavasya not always the Diwali date?
The converter returns the civil day whose sunrise tithi matches. Festivals follow their own rules (Diwali, for example, follows the pradosh rule), so use the Festivals page for observance dates.
What is an adhik month?
A lunar month with no sankranti, inserted about every 32 months to keep the lunar year aligned with the seasons. When a date falls in one, the result is marked Adhik Maas.