Locker access times coincide with station opening and closing times. 
Stations with automatic lockers:

• Cais do Sodré;
• Lisbon Oriente; 
• Lisbon Rossio;
• Lisbon Sete Rios;
• Cascais;
• Porto Campanhã; 
• Porto São Bento;
• Coimbra-B.

Time limit - 24 hours.