There is life, and then there is eternity. I tend to think of eternity as timeless, however, how do we, who live in time, figure out timeless? We still use time constructs, like the phrase "Judgement Day," as if it all could happen in one day. Considering there are 7.5 billion people on earth right now, and who knows how many have already died, would it ever be possible to judge everyone in one 24-hour period? I can't wrap my head around that one any better than, "timeless."
And, so I think "Judgement Day" is the first stop to the beginning of eternity.We're judged right after we die, and since there is no time there, it could still be the "same time" everyone else is judged too.
All will be judge and all will get eternity. The sheep, (God's true people), are judged on the merits of Jesus' sacrifice. The goats, (those not chosen by the Lord), will be judged on their own lack of merits. Their sins. And they will be sent to hell... eternally.