No Moon Day In May 2025. In may 2025, vaishakh amavasya will be observed on may 7. In the hindu calendar, amavasya, also known as new moon day, is a special day that marks the beginning of the brighter half (shukla paksha) of the lunar month.
Putting all together, we get the word amavasya, which roughly translates to no moon day or no moon dwelling in the sky. 2025 amavasya days, new moon days.