The animation is only for explanatory purpuses.
The sun (red dot) moves along the curve showing its position in the sky and the hour of the day indicated on the lower bar. The minutes are read on the disk above. The adjustable blue rod represents the horizon and is manually set to the current month of the year. The month (in Roman numerals) is found along the vertical line which corresponds to the location’s latitude. The bar at the bottom of the clock slides horizontally to compensate for daylight saving time. The portion of the curve above the horizon line shows the sun’s course during the day while the portion below shows the sun’s course during the night.
