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
Sun
2012-12-21 → 2012-12-24
Moon
2012-12-24 → 2012-12-29
Mars
2012-12-29 → 2013-01-01
Rahu
2013-01-01 → 2013-01-09
Jupiter
2013-01-09 → 2013-01-16
Saturn
2013-01-16 → 2013-01-25
Mercury
2013-01-25 → 2013-02-02
Ketu
2013-02-02 → 2013-02-05
Venus
2013-02-05 → 2013-02-14
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.