Kundali
A kundali is the sky at one birth moment — the lagna rising in the east, the nine grahas in their rashis, and the panchang of that day. Enter a date, time and place to generate one.
What a kundali shows
The chart places all nine grahas by sidereal longitude, marks the lagna — the rashi rising on the eastern horizon at the birth instant — and counts the twelve bhavas from it. Alongside it you get the birth nakshatra and pada, the naam akshar, the Vimshottari dasha balance remaining at birth, and whether Mangala falls in one of the Mangal Dosha houses.
Birth time matters unevenly. The grahas move slowly enough that an approximate time still places them correctly, but the lagna crosses a rashi about every two hours, so a few minutes either side of a boundary rotate every house.
Positions are computed on the sidereal (nirayana) zodiac with the Lahiri ayanamsa, by the same engine as the HinduCalendar Android app — so a chart here and a chart there agree. What the chart records is where things were; reading it is a separate matter, and this page does not attempt one.