Calculating the Relativity of time for a Short Story

So I'm geeking out while working on a new sci-fi short story. If you've ever had trouble understanding the relativity of time this might help! (See this article) It helped me convert how much time someone would experience if they were traveling (near) the speed of light while two years passed on earth! I believe the person in the space ship would experience 48 days 14 hours and 24 minutes passing, while 2 entire years passed on Earth! Science is amazing :)

PS. If anyone feels like geeking out too and checking my math it would be very very appreciated hahaha!