I went to let my dog out and since i've seen a ufo before i decided to look for one and i saw a massive 300ft wide wedge shaped triangle craft. it stuck out as the lights flashed and in a pattern where the light furthest from the apex flashed twice and then the other three flashed from the opposite side towards the first light in individual flashes and it does so for three cycles and repeates.When i saw it, it was an obvious ufo portraying silence at an altitude around 1000ft and a non-symmetric light pattern.The craft flew in from west and was on a curved path flying towards the east and then towards the north and flew at around 100mph (too slow for such a massive object) out over the football stadium.My reaction was that i finally got to see a triangle craft and a rare one at that. i lost sight of it as it lazily listed of the horizon (the football stadium).