Importance of Amavasya and Purnima in our life
The moon goes around the earth once in every 29.5 days. The moon cannot glow on its own and it just reflects the sun rays falling on it. During its various positions around the earth, it is exposed to varying amount of sun rays as the earth occurs in between. Therefore moon appears to grow and reduce in its data-size.
When the earth completely blocks the moon from the sun, it is Amavasya and when the moon is completely exposed to the sun, it is Purnima. {{RelevantDataTitle}}