Interstellar-

Cooper and Brand have traveled millions upon millions of miles and have reached the first planet that may have potential for life.

Only, the planet is edged close to a black hole, meaning time is dilated.

Every hour spent on the planet, one of the characters explains, equates to 7 years on Earth.

Every hour is 7 years that Cooper’s children grow older, while he doesn’t. Every hour is 7 years closer to more crops dying out on Earth and the planet becoming uninhabitable. Every hour is 7 years.

Once they land, it quickly becomes apparent the planet is a hellscape. What looked like mountains in the distance turned out to be unimaginably colossal waves.

And they are caught up in these waves, losing years.

Throughout the scene, the score included a subtle ticking, which obviously has symbolic significance.

But here’s where it gets interesting.

Someone on Reddit decided to do a lot of calculations:

Which of course is loosely backed up when they arrive back at their station and have been gone for 23 Earth years but only a few hours for them.

Every tick passing is a day lost.