The only answer you've gotten so far is garbled nonsense ... and I don't want to make similar mistakes. So I'll stay very simple:
1. You don't need general relativity to talk about this. Special relativity (that's special as in "special case") suffices.
2. It's true that in general, you can't talk sense about the idea that two events happened at the same time; in this case, say, that you looking at your watch two weeks ago and the explosion "really" happening were simultaneous.
1. You don't need general relativity to talk about this. Special relativity (that's special as in "special case") suffices.
2. It's true that in general, you can't talk sense about the idea that two events happened at the same time; in this case, say, that you looking at your watch two weeks ago and the explosion "really" happening were simultaneous.
I defer to a more effortful write-up for more: http://en.wikipedia.org/wiki/Relativity_of_simultaneity