This is my 4th or 5th UFO sighting. I have doubts on my 4th sighting (65228). But this one is 100% Extraterrestrial Craft.Date: 24-Apr-2015Time: 19:32 (India Time)My Location spot (as per Google Maps): 28.6529163,77.1673835Place: Block 24, West Patel Nagar, New Delhi, IndiaWeather: The sky was hazy blue and was still bright at the time of the sighting.Sunset (Delhi time): 18:52 (India time)Moonrise (Delhi Time): 10:30 (India Time)Moonset (Delhi Time): 00:14 on 25th (India time)Duration of sighting:1st view: about 4 seconds2nd view: about less than 2 secondsIt's approximate flight path was:-- FROM: inbetween West & West-by-South-- TO" inbetween East & East-by-NorthI entered an approx. 15 feet wide bylane and habitually kept looking up every now and then (that's how I walk all the time). A few moments later, at 19:32 hours, and at about 65º elevation, I saw a star-like white light moving very slowly in the sky - from left to right. Unlike my 3rd Extraterrestrial Craft sighting (65067), this time I could also see its gray colored, rectangular, horizontal-platform type body, with no apparent external features. It looked like a 2D object with the star-like light at the center of its bottom. Since its color was a uniform gray, something inbetween white & black, I could not comprehend the height of the craft.As usual, there was no noise/sound, no wings like an air plane, no blades like a helicopter, no smoke and it left no trail. It was high up in the sky and quite big - proportions were like 6 cm - x - 3.5 cm - and reminded me of a battle tank (without its barrel). It's size could have been similar to or bigger than a basketball court. If I remember correctly, due to too many thoughts in a very short span of time, its front left side appeared chopped off (curved inside).It's altitude might have been 500 feet or more, but it wasn't very high up in the sky.It was moving very slowly and it took about 4 seconds to move across the viewable sky from the 15 feet wide bylane, with three to four storied (floors) buildings on either side and went out of sight. I thought of running down the lane to take another look after turning right but decided not to. I continued walking briskly (my normal speed) and reached the spot (about 25 feet wide street - see image) where I thought I might see it again. I saw it again for or one two seconds and then it went out of sight as a tree obstructed the view of its flight path.Though the sun had set 40 minutes before this sighting, the sky was hazy blue and was still bright at the time of the sighting. The UFO depicted in the image tries to show the bottom view. There was no wind and it wasn't very hot at that time.