The buddha, the awakened, the enlightened one shines both in the night and in the day; there is no difference for him. Once you have become awakened, then nothing makes any difference. But till that happens use the night atmosphere more and more for meditation. And when the moon is there in the night it is far easier to meditate. 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.