I'm a bit of a spazz when it comes to higher-order math, but I want to understand how to calc a realistic (yet still hypothetical) relativistic trip. By my calcs, at 1g, it would take 312 days to accelerate to 90% of c. The final 9.999% gets trickier as the Lorentz transform becomes great enough to affect each additional 10m/s. With my math, I'd have to do it by brute force. Then they immediately flip over and decelerate. Is there a better way to calc the time dilation for this trip? To make a trip of much shorter length, I put my occupants in immersion tanks, and accelerate them at 10gs. Now it only takes 31 days. I want to massage the numbers (such as how close they get to c, and how long they spend there) and create a scenario that demonstrates time dilation on a storyline scale (i.e. months). The distance would be interstellar (a couple of light years). Help?