USPS stamps reflect the religious and cultural diversity of the United States of America. Here are the 2008 USPS Holiday Stamps.
Eid al-Adha (2008), the Muslim Festival of Sacrifice, is on Monday, the 8th of December.
Chanukah (2008), the Jewish Festival of Lights, will start on Monday, the 22nd of December and will continue for 8 days until Monday, the 29th of December.
Christmas is celebrated on December 25 by Roman Catholics, Protestants, and many non-Christians. Orthodox Christians celebrate Christmas on January 6.
This season's secular stamps are the tin soldiers from the holiday ballet, The Nutcracker.
Kwanza is celebrated between December 26 and January 1 in US African-American communities.
Lunar New Year (2009) will start on January 26 and will continue for 15 days, ending with the Lantern Festival. Asian communities all over the world will be celebrating the Year of the Ox.
For a good, quick reference for holiday dates, visit When-Is, which also includes What Is? a simple description of each holiday.