There is a fair chance you waste your time if you happen to be in a foreign country on business during local or national holidays. PocketHolidays program will let you effectively schedule your trip to any country of the world.
This application will remind you of the upcoming holidays, and what's more, it will let you enhance your cultural awareness by researching the origin of a holiday and comparing it to other holiday customs of the world.
You can also add (Export) any selected holiday to Calendar for further reminder. Most of the holidays have detailed description. You can edit the holidays available, delete them or add you own holidays with the possibility of editing their description as well.