The Vimśottarī tree to five levels. Every boundary is an exact division of its parent — the last child ends precisely where the parent does — and the year length is named because it changes the answer. Nothing entered here is stored on our servers — your browser alone remembers your last-used details.
Year length: 365.25636 days (meanSiderealDrik) · running now: Jupiter → Ketu → Saturn → Moon → Jupiter
Mercury
1991-05-13 → 1991-05-13
Ketu
1991-05-13 → 1991-05-13
Venus
1991-05-13 → 1991-05-14
Sun
1991-05-14 → 1991-05-14
Moon
1991-05-14 → 1991-05-14
Mars
1991-05-14 → 1991-05-14
Rahu
1991-05-14 → 1991-05-14
Jupiter
1991-05-14 → 1991-05-15
Saturn
1991-05-15 → 1991-05-15
Boundary times are root-found and residual-verified, never interpolated. Change the convention and these numbers change — which is why it is printed beside them.