Direction: Study the following information carefully and answer the question given below.

At a train station eight trains B1, B2, B3, B4, B5, B6, B7 and B8 are scheduled to depart at 0000 hours, 0600 hours, 1200 hours and 1800 hours over two consecutive days D1 and D2 but not necessarily in the same order.

B5 is scheduled at 0600 hours on day D1. B6 is scheduled 12 hours after B5. Only two trains are scheduled to depart before B1. B2 is scheduled 6 hours after B8 but it is not the last train to depart. The difference between time of departure of train B2 and B3 is more than 24 hours. Train B7 is scheduled 12 hours before or after B2. Train B4 is not the last train to depart.