The Sun as the symbol of Spirit, the Circle the symbol of Wholeness and Ouroboric beginnings.
The circle can be divided evenly over and over again. Each division modelling a different branch of wholeness.
12 divides the circle evenly. There are 12 poses in our Surya Namaskar and 12 signs running through our Zodiac
9 divides the circle evenly. 40 times! Many of us have experienced or witnessed the power of 40 as a cycle of transformation, as in the number of weeks a human baby grows inside his/her mother's womb to full-term.
12 x 9 = 108.
Many Eastern religions have recognized 108 as having sacred energy. 108 Sun Salutations is often used to honor change, as in a change of seasons, or at a time of tragedy to bring peace, respect and understanding.
108 divides the circle 3.333333333333 ad infinitum. Its a model of an open system. It has no boundaries.