The 2014 version of the app is now available for iOS from the UN.
United Nations Multilingual Calendar of Observances, 2014
This free iOS app features official United Nations observances and links to related videos and further information. It also illustrates how the UN makes a difference in tackling global challenges. The UN Calendar can store UN observances in the native calendar, or it can be used independently. The app functions in Chinese, Spanish and English. Arabic, French and Russian.
Direct to Calendar App (via iTunes App Store)
See Also: Directory of UN Apps (For iOS and Android)
Tip/Thanks: UN Pulse