Original: On 15 January 1995 , during the X World Youth Day , he offered Mass to an estimated crowd of between five and seven million in Luneta Park , Manila , Philippines , which was considered to be the largest single gathering in Christian history .
Simplified: On 15 January 1995 , during the 10th World Youth Day , he offered Mass to an estimated crowd of between four and eight million in Luneta Park , Manila , Philippines .