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
Moon
2009-12-08 → 2009-12-14
Mars
2009-12-14 → 2009-12-19
Rahu
2009-12-19 → 2009-12-31
Jupiter
2009-12-31 → 2010-01-10
Saturn
2010-01-10 → 2010-01-22
Mercury
2010-01-22 → 2010-02-02
Ketu
2010-02-02 → 2010-02-07
Venus
2010-02-07 → 2010-02-20
Sun
2010-02-20 → 2010-02-24
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.