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 → Rahu
Mars
1991-05-20 → 1991-05-20
Rahu
1991-05-20 → 1991-05-20
Jupiter
1991-05-20 → 1991-05-20
Saturn
1991-05-20 → 1991-05-20
Mercury
1991-05-20 → 1991-05-21
Ketu
1991-05-21 → 1991-05-21
Venus
1991-05-21 → 1991-05-21
Sun
1991-05-21 → 1991-05-21
Moon
1991-05-21 → 1991-05-21
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.