According to Vedic Astrology, when planets are in a specific manner, it creates some auspicious or inauspicious results. For example, if there is sun mercury conjunction in any sign, it is considered to form Budhadiya yoga. This yoga is sufficient enough to make the person intelligent, lustrous, and learned in their life. If the Sun and Mercury in Pisces, there is a formation of Budhaditya Yoga in Pisces. If you want to know more about this yoga, you can read blogs written by Dr. Vinay Bajrangi.
https://www.vinaybajrangi.com/festivals/akshay-tritiya.php