The document discusses three holidays celebrated in the United States: Thanksgiving, Christmas, and New Year. For Thanksgiving, it notes that it is celebrated on the fourth Thursday of November and marks the 1621 celebration between pilgrims and Native Americans. For Christmas, it describes traditions like decorating houses, leaving milk and cookies for Santa, and receiving gifts. Christmas is celebrated on December 25th and commemorates the birth of Jesus Christ. For New Year, the summary discusses traditions like special events and parties, New Year's promises, and the New Year's kiss at midnight on December 31st.