What the calculator reports
Each sidereal D1 rāśi has sixty 0°30′ portions. The calculator gives the occupied part, its traditional name, and its derived D60 sign for Lagna, seven grahas, and the mean lunar nodes. The name sequence follows Parāśara 6.34–6.39 and is reversed in even D1 rāśis under 6.40. It does not assign a free-standing observed D60 longitude.
The sign convention is selectable because the sources are read differently. P. V. R. Narasimha Rao, §6.2.20, Example 26 starts sign counting with the occupied D1 rāśi. The literal translation of Parāśara 6.33 doubles within-sign degrees, takes a remainder by twelve, and can be read as starting the D60 sign sequence at Aries. These yield different signs for many positions, while the name sequence remains tied to the D1 rāśi’s odd or even status.
Precision before interpretation
The output recomputes Lagna at −5, −1, +1, and +5 minutes and shows its distance to a part boundary. This illustrates sensitivity for the entered place and date; it cannot decide which time on a rounded birth certificate is correct. If the time is unknown, use the manual longitude lookup for a known planet and withhold a D60 Lagna. See the full D60 method and name table.