The full-moon night is the best for meditation. Many people who have become Buddhas have attained their enlightenment on the full-moon night, even Buddha himself.
It may have been a coincidence, but it is significant to remember: he was born on the full-moon night, he became enlightened on the full-moon night and he died on the full-moon night.
Something in the full moon seemed to be synchronizing with his energy. Use it. Be alert and use every possibility to help you go in. Once you are awakened, then there is no problem. Then you can be at ease, at rest, at peace, anywhere.
The Dhammapada: The Way of the Buddha , Vol 11, ch 7