although this thread was originally for a specific feast,
there is information of a general nature regarding the
Day of the Dead and feasts that occur annually around
halloween, dia de los muertos, All soul's day, etc.

here are a few more links:

http://en.wikipedia.org/wiki/Day_of_the_Dead

http://www.azcentral.com/ent/dead/

http://mexicanfood.about.com/od/history/a/dayofthedead.htm

my daughter's mother-in-law recently returned to Guam
to celebrate/commemorate the one year anniversary of
her mother's passing, which i understand is a usual
event in that culture.