It goes round and round.
A visceral shudder went through the group. The last bit of sun was slowly dipping beneath the horizon, pretty soon all the light would be gone.
And those...things would be on the hunt.
Their group was one of the last remaining human survivors on Earth. They had no way of knowing who else was out there. The only thing that was ever on their mind, aside from eating and water, was the exact time of each sunrise and each sunset.
Because at night, they roam.
Almost everyone who has seen the things hasn't survived to tell the tale. One of their group, a former optometrist, lived long enough to gasp, "They aren't monsters, they're worse. Run."
The group moved quietly through their carved out corner of sanctuary in an abandoned trailer park that was slowly being choked out by weeds. They had arranged several of the trailer homes in a half circle, providing both shelter and a makeshift barrier against the tree line.
Four of the group set up watch posts to keep an eye out throughout the night, while the others slept. Movement was severely limited for them in the 10 hours of darkness that reigned in this area formerly known as Beaumont, Texas.
The night passed quietly. A salmon pink color tinged the sky. The one watching to the East couldn't help but cheer a bit. They'd survived to another sunset.