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
Venus
2011-12-18 → 2011-12-20
Sun
2011-12-20 → 2011-12-20
Moon
2011-12-20 → 2011-12-21
Mars
2011-12-21 → 2011-12-21
Rahu
2011-12-21 → 2011-12-23
Jupiter
2011-12-23 → 2011-12-24
Saturn
2011-12-24 → 2011-12-26
Mercury
2011-12-26 → 2011-12-27
Ketu
2011-12-27 → 2011-12-28
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.