Whitby Ontario Canada 1:30 am saw a flashing light moving in diferent directions and at different speeds

l was 13 years old and l was trying to find different stars in the night sky for a school project.l was laying on the back of my dads new Ford fastback with my books out.  My brother came home from a date and laid out beside me and began to help me star gaze,after about half an hour he said what is that pointing north(we were laying heads to the east feet west)l looked and saw a flashing light moving across the sky about the speed of the space station, when the light was directly over us it stopped,flashed several times then traveled directly west then stopped and again sat there and flashed on and off a few times, then the light moved directly east crossed its own path and moved the same distance as it did west,east, the light stopped again flashed on and off,then moved back to its original path,sat and flashed then starting back on its path south at the same speed then began to speed up within seconds was going so fast it turned into a solid light and was gone.  l have never and will probably never see something go so fast!!!  l think about it quite often because l cant explain it maybe you can?
Witness indicates that the date of the sighting is approximate.  PD