In which year was the Paris Agreement signed?

In which year was the Paris Agreement signed?

پیرس معاہدے پر کس سال دستخط ہوئے؟
Explanation

The Paris Agreement is a legally binding international treaty on climate change.

The Paris Agreement is also known as (COP21. 

2015 conference was to achieve, for the first time in over 20 years of UN negotiations, a binding and universal agreement on climate.

It was adopted by 196 Parties at the UN Climate Change Conference in Paris, France, on 12 December 2015