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
Venus
1991-01-11 → 1991-01-13
Sun
1991-01-13 → 1991-01-14
Moon
1991-01-14 → 1991-01-15
Mars
1991-01-15 → 1991-01-16
Rahu
1991-01-16 → 1991-01-18
Jupiter
1991-01-18 → 1991-01-20
Saturn
1991-01-20 → 1991-01-22
Mercury
1991-01-22 → 1991-01-24
Ketu
1991-01-24 → 1991-01-25
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.