Here is a copy of Belize's holiday calendar, as presented out by the Tourism Board of Belize. Included here are descriptions of each of the holidays and events listed.
For November, there are only two holidays/official events--the Garifuna Settlement Day and the Stann Creek Agricultural Fair.
The Garifuna Settlement Day is a commemoration of the first arrival of the Garifuna in 1832 in Dangriga, while the Stann Creek Agricultural Fair exhibits livestock and local fruits and vegetables.