Flashing strobe

There was little light pollution and it was a very dark night. We had been seeing strange moving lights and then on June 8th 2017 we noticed a very bright flashing light that had no regular pattern. There had never been any tower or anything in that area where we observed the light. It changed in intensity and color also. This light was visible for again on the following night. It seemed to move closer and side to side up and down and further away also. We took video each night. We lost our google account password where the video of the object was stored and recently regained access to it. It was visible for several hours both nights and never again. The light was so bright at times it almost blinded a person to look at it.