Second sighting of a thick shadow passing by the same routeOkay, so the first time this happened it was about 2-3 weeks ago. I was sitting in my office and we are on the 26th floor.About 45cms to my right are these massive glass window frames with a very open view of hard sand below us for about 1km and then there's a canal that leads on in 3 different directions, past the canal are roads and about 4 buildings under construction (They are much smaller than our buildingg), and right after that is a highway. Basically between my building and the ones under construction there's a whole lot of space.So a few weeks ago I happened to look out my window and saw a round thick shadow that came from over my building heading in the direction of the highway. So I quickly looked up in the sky and saw nothing. A little shocked at first I decided to ignore it. Then today, from the exact same spot, passing the same(if not very similar) route it came from the first time, I saw it again. This time I decided to stand up and look properly. I stood so close to the window my face was barely an inch from it. The sun is out, not a cloud in sight and this shadow just hovering by! I lose sight of it once it reaches the highway since it's quite far but judging by the size and clearness of the shadow, it was quite close...I personally have no clue what this means. Looking at my surroundings it cannot be anything around me. Especially something that passes all that way till even past the highway(Highway is about 15kms from my building) in a matter of 5 seconds. I did not see a thing in the sky, I was in complete shock seeing a shadow formed from nothing, I could not even call people around me because by the time they reached it would be gone and they'd think I was crazy.I figured I'd share this experience with you, this has been my second sighting and I will be updating you if I see anything else.