The time of flight is estimated from our viewpoint. The time in the spaceship would be shorter.
If my Relativity calculations are correct, at 26% the speed of light
If it takes 30 minutes from the POV of the space craft than 31 Minutes 4 seconds passed on Earth.
If it takes 30 minutes from the POV of the Earth than only 28 Minutes 53 seconds passed on space craft.
So I have no idea what this guy is talking about decades going by