What is "solar days"

Usage examples of "solar days".

In our solar days, and even in the early days of the earth, when I foolishly got imprisoned in the cooling lava, my bodily processes had a different tempo and different relations to one another.

All four moons were tidally locked around Jupiter, so their solar days depended on the length of their orbits around Jupiter, ranging from forty-two hours for lo to fifteen days for Callisto.

Since the Earth takes 24 hours to rotate on its axis (I am ignoring the difference between sidereal and solar days), the spacecraft will seem always to hover over the same point on the equator.

The lunar months, like the solar days, had been diminished by one-half.