Subject: A space rocket is moving at 80% of light speed, I m moving at 70% of light

A space rocket is moving at 80% of light speed, I'm moving at 70% of light 
speed on the same direction of space rocket. Rocket has a clock,I have also a 
clock. What's the difference in time between the two clocks from the 
perspective of an observer in the ground(on earth), who has already spent 1 
hour since the launch of space rocket and me. Also what's the difference in 
time between each one's perspective.?

Re: A space rocket is moving at 80% of light speed, I m moving at 70% of light