Mars sign calculator
Mars spends about six or seven weeks in a sign. A birth date is enough for the sign; time places it in a house.
Calculate to place the sign — a star map and a short reading follow.
Mars in the natal chart
Mars spends about six or seven weeks in a sign, longer when retrograde. The sign is stable across a calendar day; the house needs a birth time. Positions are tropical and geocentric, same engine as the full natal chart.