how does amavasya and pournami occur.

Amavasya and Pournami are two important lunar phases observed in the Hindu calendar. Let me explain how these phases occur:

1. Amavasya: It refers to the new moon day in the lunar calendar. On this day, the moon is not visible in the sky as it aligns between the Earth and the Sun, with the Sun and the Moon in conjunction. This alignment results in the absence of moonlight.

To determine the date of Amavasya, you can follow these steps:
- Find the date of the new moon or the no-moon day in a Hindu calendar or look for a lunar phase calendar online.
- Remember that Amavasya occurs once every lunar month, during the transition between the waning phase (Krishna Paksha) and the waxing phase (Shukla Paksha) of the moon.

2. Pournami: It is the full moon day in the lunar calendar. On this day, the moon appears as a complete circle in the sky, reflecting the sunlight falling on it from the opposite side.

To determine the date of Pournami, follow these steps:
- Find the date of the full moon day in a Hindu calendar or look for a lunar phase calendar online.
- Remember that Pournami occurs once every lunar month, during the transition between the waxing phase (Shukla Paksha) and the waning phase (Krishna Paksha) of the moon.

Please note that the exact dates of Amavasya and Pournami may vary based on regional customs and traditions. Consulting a reliable Hindu calendar or lunar phase calendar would be the most accurate way to determine these dates.