A solar day is approximately 24 hours of mean time.

It tends to run with a period different from that of a solar day!

Other types of calendar may also use a solar day.

Consequently, solar days are not the same length throughout the year.

I've given him two solar days to come up with some kind of a solution."

"I know it's been at least one standard solar day.

The solar day, uneven as it is, carries one important advantage.

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

However, for the past several centuries the length of the mean solar day has been increasing by about 1.7 ms per century, on the average.

See solar time for more information on the difference to the apparent solar day.

The months are adjusted by allocating two lunar days to one solar day every 9 weeks.

However, even by the end of the long Europan solar day, the temperature was still far below freezing point.

It would require nearly a full solar day.

A mean solar day is, therefore, nearly 4 minutes longer than a sidereal day.

The present vernal equinox year, however, is about 12 seconds longer, in terms of mean solar days.

"We shall continue on our present course for approximately four Solar Days.

"But logistically, how do we sedate an entire planet for more than a solar day?"

At these extreme points this effect varies the real solar day by 7.9 seconds per day from its mean.

Other planets and moons also have stellar and solar days.

Its definition was calibrated such that 86,400 seconds corresponded to a solar day.

It is the solar day, therefore, which is by far the most useful and important day of all.

About three solar days, give or take.

Gauss originally defined the gravitational constant in terms of the mean solar day.

Therefore, there is one fewer solar day per year than there are sidereal days.

A mean solar day is defined as the time between one solar noon and the next, averaged over the year.