here's a question: when karkat contacted john, he said he'd spent "Sweeps" searching for him. So aren't the trolls older than the kids? They also said they'd spent at least Months on the meteor after jack happened, before Dave contacted Terezi. And how long was the Trolls' session? And how old were each of them compared to one another? I feel like they can't all be the same age. So i guess I'm asking; how old are the trolls compared to the kids, and one another?

He was exaggerating, he’d only been searching for a few hours. The trolls are the same age as the kids. And the trolls were only on the meteor for like a day before they found the kids, since we saw Karkat go to sleep for the first time in weeks only to have his dreamself killed. And the trolls session lasted a little over three weeks.