UN Arabic Language Day

UN Arabic Language Day (اليوم العالمي للغة العربية) is observed annually on December 18.

Background
The event was established by the UN Educational, Scientific and Cultural Organization (UNESCO) in 2010 seeking "to celebrate multilingualism and cultural diversity as well as to promote equal use of all six of its official working languages throughout the organization". December 18 was chosen as the date for the Arabic language as it is "the day in 1973 when the General Assembly approved Arabic as an official UN language".