India, Sept. 15 -- This Sunday morning, hundreds of small fluffy clouds covered Delhi's eastern sky. They were bluish-grey underneath, with edges turned gold by the rising sun. Seen from the terrace of a multi-storey residence, a lamppost atop a neighbouring building rose into the view (see right photo). These observations of Delhi's sky come from mornings and evenings during the first half of September. The rains are ending, winter is some weeks away, and there is less pollution in the air. The clouds seem more fully themselves, their whites and greys freshly revealed, like the surface of a kitchen utensil just brought back from the kalai wala bhaijaan. September also happens to bring some of the city's clearest sunsets. Indeed, to watch c...