UFO Sighting in London, Ontario on April 8th 2016 – bright small globe

i saw a bright light that for the first few seconds i thought was a plane when i saw it start to drop,the dart around then it rose quite high into the sky then drop 10 to 15 degrees while flashing the darted back high into the sky then slowly fell again. it did this several times. this sighting last about 90 seconds.it then rose high into the sky and disappeared. when rising and falling it also ducked behind clouds. i would guess it was over or close to lake huron.