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I have been seeing this also
I have been seeing this also the past few weeks around that same time frame. I am in the US in Colorado. They have been in the northern sky and also a little east if you're looking straight up. They stay lit for a few seconds, disappear then reappear and so on. In one case it flashed very brightly & disappeared. Thought it was satellites as well but, felt it odd that they would keep disappearing as they were.