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
1997-12-02 → 1997-12-03
Rahu
1997-12-03 → 1997-12-06
Jupiter
1997-12-06 → 1997-12-09
Saturn
1997-12-09 → 1997-12-12
Mercury
1997-12-12 → 1997-12-15
Ketu
1997-12-15 → 1997-12-17
Venus
1997-12-17 → 1997-12-20
Sun
1997-12-20 → 1997-12-21
Moon
1997-12-21 → 1997-12-23
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.