The UN General Assembly decided in December 2018 to declare 24 April as the International Day of Multilateralism and Diplomacy for Peace.

The Assembly is expected to hold a high-level event on the topic on 24 April 2019.

date: 24 April 2019
location: New York City, US
contact: Office of UNGA President
www: http://sdg.iisd.org/news/unga-president-sets-out-plans-coordination-efforts-for-2019/
https://www.un.org/press/en/2018/ga12104.doc.htm