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
Venus
1990-09-07 → 1990-09-09
Sun
1990-09-09 → 1990-09-10
Moon
1990-09-10 → 1990-09-11
Mars
1990-09-11 → 1990-09-12
Rahu
1990-09-12 → 1990-09-14
Jupiter
1990-09-14 → 1990-09-15
Saturn
1990-09-15 → 1990-09-17
Mercury
1990-09-17 → 1990-09-19
Ketu
1990-09-19 → 1990-09-20
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.