CREEEPSS is an acronym that stands for Culture, Religion, Education, Economics, Environment, Politics, Social and Special characteristics.
All of these points factor in to how business is done internationally. For example, you should know:
In Italy, production facilities often close down for the entire month of August
In Hong Kong, it is very common to work on Saturdays
Chinese New Year is observed in February or March
U.S. Independence Day falls on July 4th, while Canada Day is celebrated on July 1st
Canadian Thanksgiving is celebrated in October; in the U.S. it is celebrated in November