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.