no need for warp in order to travel 20 light years and take 10 months subjective time. You just need to travel at 99.91% of the speed of light and you'll get a

no need for warp in order to travel 20 light years and take 10 months subjective time. You just need to travel at 99.91% of the speed of light and you'll get a 1/24 time dilation effect.