As the flight climbed up to the height from Bangalore International Airport on the way to London Heathrow on a fine morning, the cloud pattern changed their appearance over different layers. Here in the two pictures below, you can see the same layer of cloud from bottom and top. In the first picture you can see two layers of clouds, one below the level of the aircraft and one above, obscuring the sun. The second picture is taken after the flight climbed to some more height and reached farther high from the obscuring layer. But another dispersed layer of cloud is still visible obscuring the sun to a certain extend in the second picture also.