Most Moving Hour Lines Dials are equatorial in nature where the hour lines are necessarily spaced at 15° per hour. Normally one would expect the noon hour line to be due north in the Northern hemisphere. By rotating the hour lines around the polar axis by an amount proportional to the Equation of Time and Longitude correction on the day in question, direct reading of civil time is possible. Commonly this is done using Pilkington's method - see Introduction to this section
A feature of Pilkington's method is that - for clarity - the month may be space out, as seen in Brian Huggett's dial above. This dial also separates the winter time months on the left from the summer time (DST) months on the right. There is some overlap to account varying dates of start/end of Summer Time.
THE CHARTRES DIAL