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
Mercury
1998-12-24 → 1998-12-25
Ketu
1998-12-25 → 1998-12-26
Venus
1998-12-26 → 1998-12-27
Sun
1998-12-27 → 1998-12-28
Moon
1998-12-28 → 1998-12-29
Mars
1998-12-29 → 1998-12-29
Rahu
1998-12-29 → 1998-12-31
Jupiter
1998-12-31 → 1999-01-01
Saturn
1999-01-01 → 1999-01-03
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.