National Good Neighbor Day is a national day in the United States observed each year on September 28.[1][2] It is often associated with President Jimmy Carter, who proclaimed September 24 as National Good Neighbor Day in 1978.[1][3] Local activities on the day are intended to build a sense of community, and typically include neighborhood events and promoting acts of kindness.[1][3] The day is intended to overcome the isolation of many Americans, who often don't know very much about their neighbors.[4]
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was invoked but never defined (see the help page).