
This vertical dial has hour lines radiating from the top, as well as the criss-cross pattern of Babylonian and Italian hour lines, plus the lines for solstice and equinox. Looking at the shadow of the gnomon, the time of day is 9:30 am and the time of year is the equinox. The Babylonian time is 3½ hours from sunrise, and the Italian time is 8½ hours before sunset. Adding these together the length of day for the equinox is 12 hours.—Note, the figure has no numbers. Once you learn how to read the lines, it is not hard to learn how to count them!
Babylonian and Italian hours are wonderful. They measure out the day from the time of sunrise to the time of sunset. Add them together and they will give you the number of hours of daylight. A simple ancient type of sundial like this one can measure times for you that you will hardly ever find on a modern watch. Continue reading







One or two years ago we had a general enquiry about making a sundial with a calendar marked on it. Some sundials are marked with a calendar in a graphical form like an elongated figure-of-eight. This is called 
