Is it okay to give a red envelope to the moon without a full moon?

Of course. Giving a red envelope to a child under the full moon is to hope that the child will grow up healthily. Peace and health, giving red envelopes to the moon before the full moon is very particular, so we must choose a good day. Generally speaking, there is nothing to say after 13 days, 15 days and 15 days. If it is within 15 days, you must choose a good day.