2017-04-03 - Philadelphia, PA - Diamond

I was at the corner of Allegheny and Kensington in Philadelphia waiting for the bus. It was approximately 8 am on 4/3/17 It was a lovely morning and I was looking at the sky and clouds and saw a black object quite high. I was facing north/northwest. My first thought was that it was some debris floating on the air currents - but it was not just floating along - it was moving quite slowly from east to west. The object was dark black, shaped like a wide diamond – or a square object on a corner. It did not appear to reflect light – however I noticed a light that flashed about 4 times in the 10 minutes or so I was looking at it. I asked a young woman , also waiting for the bus if she saw it – she said yes - I asked her if it looked like a helicopter? She said she didn’t think so. I’m afraid I didn’t get her name, but if I see her again I will ask. I did try to take some photos – but I don’t believe they show much since the object was so high up and I! ’d think, quite distant. I can send them if it is requested