At the winter solstice a sundial's shadow stretches two or three times the gnomon's height. Here is how to plan, expose, compose and protect camera and dial in the cold.

A well-made sundial can still read wrongly if it is sited badly. Here are seven common placement errors, from tree shade to magnetic north, with practical fixes.

A practical seasonal guide to keeping an outdoor sundial clean, level, and accurate—from spring cleaning and summer shadow checks to winter freeze protection and annual gnomon inspection.