The United Nations’ (UN) International Day of Peace is celebrated on September 21 each year to recognize the efforts of those who have worked hard to end conflict and promote peace. 
But on January 1st, the Church invites believers and all people of good will to pray for Peace and to commit themselves to attitudes that promote PEACE wherever they live and work. For this year’s Day of Peace, Pope Francis has this to say:
« God is not indifferent! God cares about mankind! God does not abandon us! At the beginning of the New Year, I would like to share not only this profound conviction but also my cordial good wishes for prosperity, peace and the fulfilment of the hopes of every man and every woman, every family, people and nation throughout the world, including all Heads of State and Government and all religious leaders. We continue to trust that 2016 will see us all firmly and confidently engaged, on different levels, in the pursuit of justice and peace. Peace is both God’s gift and a human achievement. As a gift of God, it is entrusted to all men and women, who are called to attain it.
Sadly, war and terrorism, accompanied by kidnapping, ethnic or religious persecution and the misuse of power, marked the past year from start to finish. In many parts of the world, these have became so common as to constitute a real “third world war fought piecemeal”. Yet some events of the year now ending inspire me, in looking ahead to the new year, to encourage everyone not to lose hope in our human ability to conquer evil and to combat resignation and indifference. 
They demonstrate our capacity to show solidarity and to rise above self-interest, apathy and indifference in the face of critical situations. (…)
I would like to make a threefold appeal to the leaders of nations: to refrain from drawing other peoples into conflicts or wars which destroy not only their material, cultural and social legacy, but also – and in the long term – their moral and spiritual integrity; to forgive or manage in a sustainable way the international debt of the poorer nations; and to adopt policies of cooperation which, instead of bowing before the dictatorship of certain ideologies, will respect the values of local populations and, in any case, not prove detrimental to the fundamental and inalienable right to life of the unborn.
I entrust these reflections, together with my best wishes for the New Year, to the intercession of the Blessed Virgin Mary, our Mother, who cares for the needs of our human family, that she may obtain from her Son Jesus, the Prince of Peace, the granting of our prayers and the blessing of our daily efforts for a fraternal and united world.