This is tricky indeed...
I know it involves time, and something about us, but the true meaning remains unseeing...

I love it. It's so abstract. :) As for what it's about....could be a nuclear bomb (but nah...lol) or about someone who's lying in hospital knowing that they're going to die in a few days, or a funeral, or something that happened because someone was too late to help.
I also have a feeling it's none of those, haha.

Very creative poem; love it.