Lord Shiva performed the cosmic dance (tandav) between the horns of his mount Lord Nandi, is now known as Trayodashi Pradosham.

Mercury, the cosmic messenger, rules intelligence, communication, and adaptability. It governs speech, logic, business, and wit.

Shravana require guidance or a role model to maintain a sense of balance. It is capable of making big leaps and bounds to fulfil its duties.