What will Egypt's "Day of Departure" mean?

Egypt protests in Cairo
Egyptian protesters wave Egyptian flags during an anti-Mubarak protest in Tahrir Square in Cairo, Egypt, Friday, Feb. 4, 2011. The Egyptian military guarded thousands of protesters pouring into Cairo's main square on Friday in an attempt to drive out President Hosni Mubarak after a week and half of pro-democracy demonstrations. Arabic read " Swiss banks: we need our money".
AP Photo/Lefteris Pitarakis