How long the moon remains totally dark and hidden from the light of the sun? Does it vary from month to month?
The moon remains invisible as seen from a specific location on earth for about 24 to 36 hours, about 12 to 18 hours before new moon birth and roughly the similar time after new moon birth. Actual times may differ from these values in different season’s and they also change every month depending upon moon’s speed around the earth which varies along its elliptical orbit.
