These are the international days and weeks currently observed by the United Nations.
The United Nations designates specific days, weeks, years and decades as occasions to mark particular events or topics in order to promote, through awareness and action, the objectives of the Organization. Usually, it is one or more Member States that propose these observances and the General Assembly establishes them with a resolution.
On occasion, these celebrations are declared by the specialized agencies of the United Nations, such as UNESCO, UNICEF, FAO, etc., when they concern issues that fall within the scope of their competencies. Some of them may be later adopted by the General Assembly. These are for September month:
5 - International Day of Charity
7 - International Day of Clean Air for Blue Skies
8 - International Literacy Day [UNESCO]
12 - United Nations Day for South-South Cooperation
15 - International Day of Democracy
16 - International Day for the Preservation of the Ozone Layer
17 - World Patient Safety Day [WHO]
21 - International Day of Peace
23 - International Day of Sign Languages
27 - World Tourism Day 28 - International Day for Universal Access to Information 30 - World Maritime Day and International Translation Day