Vat pournima

Vatpournima is a vowed religious observance performed by married women on the full moon day (pournima) in the Hindu lunar month of Jyeshtha to prolong their wifehood.

Chaturthi

On the day of Chaturthi, Shri Ganapati Principle is a 1000 times more active on earth than other days. Worship of Shri Ganapati on this tithi gives greater benefit of Shri Ganapati Principle.

Which specific flower should be offered to a specific Goddess?

Specific flowers have better ability to attract the subtlest particles of a specific Deity’s principle. When these flowers are offered to the Deity during worship, they help awaken the idol and the devotee benefits from the chaitanya in the idol.