Hundreds of thousands of pilgrims began their slow and steady trek to the tent city of Mina on Saturday night in the first leg of their five-day journey. Almost all pilgrims will be in their tents by Sunday afternoon. They will spend a day in contemplation before moving to the Plains of Arafat Monday in what is described as the most significant ritual of the pilgrimage.Earlier in the day, Custodian of the Two Holy Mosques King Abdullah appointed Second Deputy Premier and Interior Minister Prince Naif to oversee Haj. Prince Naif, who is also chairman of the Supreme Haj Committee, has been in Makkah this last week, supervising security arrangements for the pilgrimage.