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
Mars
2017-11-15 → 2017-12-07
Rahu
2017-12-07 → 2018-02-03
Jupiter
2018-02-03 → 2018-03-26
Saturn
2018-03-26 → 2018-05-26
Mercury
2018-05-26 → 2018-07-19
Ketu
2018-07-19 → 2018-08-11
Venus
2018-08-11 → 2018-10-13
Sun
2018-10-13 → 2018-11-02
Moon
2018-11-02 → 2018-12-04
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.