http://vaticaninsider.lastampa.it/en/the-vatican/detail/articolo/22827/

According to the Vatican Insider, or La Stampa, which is the best source of objective and accurate news on the Vatican, the date of the Conclave has been set on Monday, 11 March 2013, which they posted on Monday, 4 March 2013, today, on their La Stampa edition.

Confirmation from the Holy See Press Office (Fr. Federico Lombardi) is needed however, as the first General Congregation of the College of Cardinals that meets to decide the starting date of the Conclave only began this morning at 9 am CET or Rome time. Therefore, the starting date of the Conclave may still change, but it is highly expected to occur between Saturday, 9 March 2013 and Monday, 11 March 2013.

We hope then to have a Pope by Thursday, 14 March 2013 at the latest, and hope that in that case, the Papal Installation Mass can be held on Sunday, 17 March 2013, the 5th Sunday of Lent. That we can have the new Pope to lead us in the celebration of the Holy Week, and the residential Cardinals too can go home to celebrate the Holy Week in their respective archdioceses/dioceses.