Revolutionary groups have called for mass protests on Tuesday against the verdict in the trial of Hosni Mubarak and a number of senior former regime figures.
Protests broke out across Egypt on Saturday after Mubarak and El-Adly were both slapped with life sentences for participating in the crime of killing of protesters during last year's January 25 Revolution, and six police chiefs were acquitted of similar charges.
In a separate corruption case, meanwhile, Mubarak, his two sons, and Egyptian business tycoon Hussein Salem were all found not guilty by the same judge.
The protest was announced at a press conference at the Al-Badil newspaper headquarters in Cairo by the April 6 Youth Movement, Revolutionary Youth Coalition, Egypt's Social Democratic Alliance, Revolutionary Socialists, Maspero Youth Union, and The National Association for Change Youth among others.
The protest in Tahrir Square will start at 5pm and be joined by two marches departing from Imbaba in Giza and the Fath Mosque in Ramses Square.
Former presidential candidates Hamdeen Sabbahi and Abdel-Moneim Abul-Fotouh will each lead one of the marches.