Here's the official program, from the Portuguese side:
http://www.presidencia.pt/index.php?id_categoria=11
State Visit of the President of the Republic and of Drª Maria Cavaco Silva to the Kingdom of Spain
September 25th
11:00 AM - Arrival at the International Airport of Barajas, Madrid
11.45 AM - Official welcome by the King and Queen of Spain (Palace of El Pardo)
2.15 PM - Meeting of the President of the Republic and of Dr.ª Maria Cavaco Silva with the King and Queen of Spain, along with the Prince and Princess of Asturias (Palace of La Zarzuela).
Exchange of Gifts and Decorations
2.45 PM - Private lunch of the President of the Republica and his wife with the Kings of Spain and the Princes of the Asturias
5.30 PM - Meeting of the President of the Republic and the President of the Spanish Government, Jose Luis Rodriguez Zapatero
6.20 PM - Reception offered by the President of the Republica and Dr.ª Maria Cavaco Silva in honor of the Local Portuguese Community (Residence of the Portuguese Ambassador in Madrid)
9.00 PM - Gala dinner offered by the King and queen of Spain in honor of the President of the Republic and of Dr.ª Maria Cavaco Silva (Royal Palace of Madrid)
September 26th
10:15 AM - Homage to the "Caídos por España" (Plaza de la Lealtad)
10.45 AM - Welcome ceremony, at the City Hall of Madrid, with the delivery of the town keys to the President of the Republic
11.45 AM - Homage of the President of the Republic and of Dr.ª Maria Cavaco Silva to the Victims of Terrorism with a musical moment interpreted by the Gulbenkian Choir (Memorial of Retiro)
12.20 AM - Closing Session of the "Organizations COTEC in support of the enterprise cooperation between Portugal and Spain" (Confederación Española de Organizaciones Empresariales)
2.15 PM - Lunch in honor of the President of the Republic and of Dr.ª Maria Cavaco Silva, offered by the President of the Government of Spain and his wife.
4.30 PM - Plenary session of the Congress and of the Senate in welcome to the President of the Republic.
6.15 PM - Meeting of the President of the Republic with the President of the Popular Party, Mariano Rajoy (Palace of El Pardo)
8.30 PM - Concert performed by the Gulbenkian Choir (Palace of El Pardo)
9.00 PM - Reception offered by the President of the Republica and his wife, in honor of the King and Queen of Spain (Palace of El Pardo)
September 27th
9:15 PM - Breakfast of the President of the Republic with the Administration of the Caixa Central Bank (Headquarters of Caixa Central)
10.15 AM - Visit of the President of the Republic and Dr.ª Maria Cavaco Silva to the Astrobiology Center of the National Institute of Aerospace Technique "Esteban Terradas"
Signature of the Protocol between the Biotechnology Center (Spain), the Astrobiology Center (Spain) and the Institute of Neurobiology Ràmon y Caljal (Spain) and Associated Laboratory ITQB/IBET/IGC (Portugal)
11.40 AM - Visit of the President of the Republic and Dr.ª Maria Cavaco Silva to the INAPA
1.00 PM - farewell ceremony of the King and Queen of Spain to the President of the Republic and Dr.ª Maria Local Cavaco Silva (Palace of El Pardo)
2.00 PM - Departure of the President of Republica and Dr.ª Maria Cavaco Silva way to the Principality of Asturias (International airport of Barajas)
3.10 PM - Arrival of the President of the Republic and Dr.ª Maria Cavaco Silva in Oviedo (Airport of Asturias)
4.35 PM - Meeting of the President of the Republic with the President of the Government of the Principality of Asturias (Palace of Conde Toreno)
5.55 PM - Visit of the President of the Republic to the Termoelectric Central of Aboño
9.30 PM - Dinner offered by the President of the Government of the Principality of the Asturias and his wife, in honor of the President of the Republic and his wife
September 28th
11:30 AM - Brief meeting of the President of the Republic and Dr.ª Maria Cavaco Silva with the Princes of Asturias
11.40 AM - Stroll of the President of the Republic, Drª Maria Cavaco Silva and the Prince and Princess of the Asturias by the historical downtown of Oviedo
12.00 - visit to the Cathedral of Oviedo. Musical moment, interpreted by the Choir of the Cathedral. Visit to the Saint Chamber of the Cathedral.
12.45 - Visit of the President of the Republic, Dr.ª Maria Cavaco Silva and the Prince and Princess of Asturias to the Fine Arts Museum of Asturias. Inauguration of the exhibition "Encontro Marcado", by Adriana Molder.
1.15 PM - Continuation of the stroll by the historical downtown of Oviedo
2.15 PM - Farewell ceremony by the Princes of Asturias and other authorities to the President of the Republic and Dr.ª Maria Cavaco Silva
2.30 PM - Departure of the President of the Republica and Dr.ª Maria Cavaco Silva way to Lisboa