Purnima
What is Purnima?
Purnima is the Sanskrit word for the day of a full moon.
What makes purnima special?
In most Sanatan Dharma cultures (and other religions/cultures), purnima is a very auspicious day celebrated with many festivals. Some examples are Kartik Poornima, Buddha Poornima and Guru Purnima to name a few.
Scientifically, on this day, the moon has a slightly stronger effect on the earth. This causes even the oceans tides to rise and fall according to the movement of the moon.
According to the Puranas, this effects the human body as well. Fasting is highly recommended and reduced intake of liquids. Doing so increases the life potential within the body. This means aiding in detoxification, illnesses and reduce tamas.