Here are some links if you would like a little more information on the apparent motion of the Sun relative to the Earth and its effect on the climate. Assuming uniform circular motion one gets a first approximation to the motion of the Sun along the Ecliptic which is used in the link on the Declination of the Sun. This can be used with in the derived formula for an estimate of the amount of daylight for any day of the year.
Plane of the Ecliptic
Effect of the Sun Angle on Climate
Declination of the Sun
Uniform Circular Motion
From Stargazers to Starships
The last link is to a website which gives a basic introduction to Astronomy.