Thought it was the sun but it was too low. Can find no explaination

There was a bright light and it was different to anything that we had ever seen before, we were confused and went inside. It did seem to low for it to be anything else. There was me, my sister, my best friend and her sister and we were not sure about what we had seen. At first we believed it had just been the sun but it was not bright anough as you could look at it without hurting your eyes. It is an experience that none of us will ever forget and although we still discuss what it might have been we all know the truth. It is unexplainable. Nothing happenned to us, but what we saw was not human. We just can not find an explaination.
Date is approximate.  Witness provides no more detail than that above.  PD