I see flashing white and blue stars quite often (mostly white), and they come from my guidance. Below are some patterns.
The really powerfull stars flash close to me about a foot above my head, to my left or right, or 7 or more feet away from me. They never flash right in front of me closer than 7 feet, which is good, because it would be too startling if they did. When these bigger stars flash I can feel a burst of energy.
When a star flashes close to me, it is always small.
They also flash in meaningfull ways, and sometimes come with mental messages. For example, one time I woke up in the middle of the night while lying on my side, and felt my energy body being worked on. I mentally asked: "Is this a spirit being helping me. A star flashed, and I was given the mental message: "Yes." I then asked: "So I have nothing to worry about?" Another star flashed, and I got the mental message: "Yes." My energy body was worked on for a few minutes. The next day when I meditated, my meditation was clearer than it had been before.
Another thing that has happened a number of times, is my attention will be brought to a particular area, and a star will flash right there.
Sometimes the stars will flash to get my attention, and I'll get a mental message to handle the situation that is just about to happen, with care. These are situations that could be problematic, if I chose not to be inwardly centered as they occured. I thank my lucky stars that potentially negative situations have turned out well.

The main thing the flashing stars do, is tell me that my guidance is always there.
I also at times see small blue dots flash. I'm not certain, but it seems as if they occur when I should chill out or cool down. "Cool, like blue."
There's more to it than this, but I don't want to go on and on.
Regarding the night lights, I don't know. Sometimes I'll see one of the stars I talked about flash in the sky. But never a bunch. And talking about a bunch, sometimes I'll see a bunch of flashing stars after a meaningfull dream, or even during a dream.