Basically, Superboy-Prime throws a hissy fit and decides that he's going to fly to Oa to cause another Big Bang and reset the universe so that he's the only hero left. A bunch of heroes try to go after him, Hal phones ahead so that Guy and some GLs can slow SBP down, and Kal-El and Kal-L catch up. They then fly him through the debris field that used to be Kyrpton and plow straight through Rao into Mogo.
Post-crisis Krypton resides in the Andromeda Galaxy, as per Superman: Birthright IIRC. The Andromeda Galaxy is 2,538,000 Ly away from Earth.
2538000(60*60*24*365)=80,038,368,000,000 light-seconds.
Now, an official time-frame would be "a few days", considering all of those heroes who actually reached Rao and witnessed Kal-L's death were back on Earth at the time of a news report detailing their heroics.
But that's fucking stupid.
As it is, most of the feat took place during the time it took Batman to react to Dick's injury by Alex Luthor's hand. Then, we have the fact that Kal-El, Kal-L, and SBP were still talking all the way there. I don't know about you guys, but I can't find so much to talk about while flying across the cosmos with only two other dudes, one of whom is exactly the same as me and the other of whom is a whack-job crazy trying to murder the universe.
So I think I'll use a range of time-frames within an hour :distracted
5 minutes
80038368000000/(60*5)=266,794,560,000c
10 minutes
80038368000000/(60*10)=133,397,280,000c
30 minutes
80038368000000/(60*30)=44,465,760,000c
60 minutes
80038368000000/(60*30)=22,232,880,000c
Final Tally:
266,794,560,000-22,232,880,000c
Yes or yes?
