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
Mercury
1991-08-06 → 1991-08-07
Ketu
1991-08-07 → 1991-08-07
Venus
1991-08-07 → 1991-08-08
Sun
1991-08-08 → 1991-08-08
Moon
1991-08-08 → 1991-08-09
Mars
1991-08-09 → 1991-08-09
Rahu
1991-08-09 → 1991-08-10
Jupiter
1991-08-10 → 1991-08-10
Saturn
1991-08-10 → 1991-08-11
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.