The Full Beaver Moon was on November 14 thmoonnovember this year . The Full Harvest Moon was on September 16 thessentialsharvestmoon 2 this year . Now in case you didn ' t click to read that page about the Full Beaver Moon , I will give you the TLDRThe Algonquin tribes showed the colonists that this was the best time to harvest crops , fish , find eggs , and set traps for beavers for their furs in the New England area where they had settled . It is called the Frost moon not the Beaver Moon by the Native American Tribes , because this is the month when the frosts would destroy crops , and most animals would already be in hibernation . September was too early for this . <| sep |> Bummer ! It is so strange how the grandparents like to commandeer the announcement my mom has told more of her friends than I have told my own ! I totally feel you with wanting to wait til baby is born to talk about it , but I have a feeling it is just going to be harder and harder to hide over the next few months . Good luck , I hope it all blows over and people respect your privacy more as time goes on .