Metro commuters, who take the Central Secretariat-Badarpur line, may face some problems commuting by the Metro for four days starting Monday. The service on the busy line has been rescheduled for some maintenance work. The last train service from Central Secretariat towards Badarpur will operate at 10.40pm instead of 11.20pm. However, the train services from Central Secretariat up to Sarita Vihar will be available even after 10:40pm. And the first train service from Badarpur towards Central Secretariat will start at 6.15am instead of 6.00am.