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
1991-09-04 → 1991-09-08
Ketu
1991-09-08 → 1991-09-10
Venus
1991-09-10 → 1991-09-15
Sun
1991-09-15 → 1991-09-16
Moon
1991-09-16 → 1991-09-19
Mars
1991-09-19 → 1991-09-20
Rahu
1991-09-20 → 1991-09-25
Jupiter
1991-09-25 → 1991-09-29
Saturn
1991-09-29 → 1991-10-04
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.