With astrology, you can know what your life span will be. However, astrologers don't reveal a person's lifespan as per the birth chart until it's required. We can still hint at whether the person will fall into the Deergha Ayu category, the Madhyam Ayu category, or the Laghu Ayu category. https://www.vinaybajrangi.com/health-astrology/life-span/what-will-be-my-life-span.php