Light disappearing and re-appearing at different points in the sky over Pickering viewed from TorontoBefore going to bed at approximately 2:45 am on January 28, 2009 (approx.), I noticed a light in the distance in the NE sky. I live on the 17th floor of an apartment building. My bedroom window faces east. There are a series of condomiums at 30-35 floors each, approximately 10 km away in the east. The light I saw was above the set of condominiums, although I believe the light was much further away and only appeared to be above the condos. I first thought the light was an airplane, but understood that planes do not take-off or land at Pearson International Airport between early morning hours. The light first moved to the south at a slow pace, then disappeared. A second later, it would light up again, only it would appear further north. My guess is it moved approximately 1 km north from the spot when the light went off a second earlier. The light moved again in a slow speed to the north this time, turn off, and re-appear further to the south approximately a km away again. The distance it moved is just my estimate. This movement would randomly continue for 15 minutes. Because I was in awe, and aware it was not anything familiar, I watched the entire event which lasted approximately 15 minutes. The light finally dissipated for the last time and never re-appeared. I google searched the event several days later, and found that a report was filed on a UFO website which described a sighting in the very same area and approximate time, although the sighting was reported earlier in the evening.