Knowledge Center
Every calculator on this site shows its working. These pieces go the other way round — they explain the reasoning first, so the numbers a tool gives you mean something. Each one links back to the calculator it describes.
The twelve boxes never move — it is the first house that shifts. Find the Lagna, count clockwise, and the rest follows.
Which day, then which hour. The five limbs, the months nobody schedules in, and where two honest astrologers genuinely differ.
Not a fixed clock time: one eighth of the daylight, assigned by weekday, moving with sunrise and with your town.
What the three phases mean, why the length is never exactly seven and a half, and why calendars disagree on the end date.
Why Deepavali moves, what an adhika masa is, and why two calendars can put the same festival a day apart.