The Ascendant is the sign of the zodiac which rises to the East, at the exact time of your birth, and thus requires for its calculation that you know the precise hour of this event. For example, for the year -40, select -040. The year must be entered with 4 characters.
Tips: to create many charts quickly or modify birth data for research, preferably use the dynamic natal chart with its space/time browser and the 'Display AS and MC Aspects' option. If there are cities with the same name, select yours by scrolling through the list that appears. Type only the name of your city (nothing else, never the country). ** A planet less than 1° from the next House cusp is considered to be posited in the said House.