Yes it is real!
The International Day of Friendship was proclaimed in 2011 by the UN General Assembly with the idea that friendship between peoples, countries, cultures and individuals can inspire peace efforts and build bridges between communities.
The resolution is meant to promote international understanding and respect for diversity among the younger generations in different societies since they are the future leaders of tomorrow.
Friendship Day is also intended to support the goals and objectives of the Declaration and Programme of Action on a Culture of Peace and the International Decade for a Culture of Peace and Non-Violence for the Children of the World.
To mark the International Day of Friendship the UN encourages governments, international organizations and civil society groups to hold events, activities and initiatives that contribute to the efforts of the international community towards promoting a dialogue among civilizations, solidarity, mutual understanding and reconciliation.