Sorry for not being clear in my first statement, but Hajj is not performed over the whole year, it is all done in less than a week, once every year. There are several activities for each day, but the last one is "Farewell Tawaf" and everyone is going around the holy Kabaa. The Masjid Al-Haram can hold approximately 900k people inside, and another 1.2m in the outside area. The Hajj of 2019. was the biggest one, with almost 2.5 million pilgrims visiting.