Im sorry i dont really know where this fits in but this is something that happened to me a little over 2 and a half years ago when i was in camp
pendelton for ITB.
We were standing outside in formation (at night) and for some reason i felt compelled to look up. Right then for a split second it seemed like night
turned to day then a wierd color then night again. This all happened in about a second to 2 timespread.
I asked other people if they saw it but they either acted confused or laughed it off.. kinda felt like i was in a truman show or something.
Anybody have any idea of what this could have been??
I can say that I knew someone who had experienced a very similar thing to you. We can rule out that a spotlight is obviously limited to any given
area, a transformer blowing would be exceptionally blinding with direct visual contact.
Since you asked for ideas... silent lightning is one.
I have seen many occurrences of it, the colour of the sky being definitely "weird" when it happened.