To determine your ascendant sign, you need to know the exact time of your birth on your birthday. Your ascendant sign is the zodiac sign that was rising on the eastern horizon at the time of your birth. It is also known as your rising sign. The ascendant sign is important because it can influence your personality, self-image, and approach to life. It can also affect how you interact with the world, from your appearance to your attitude to the first impressions you make on others. To calculate your ascendant sign, you can use a rising sign calculator or a free site that offers a rising sign chart. If you dont know the exact time you were born, its not possible to accurately calculate your ascendant sign because it changes every two hours.