Later on, another artificial change was made with Summer Time, which arbitrarily adds one hour to all clock times during the summer. So, in the summer, there are 3 good reasons why your watch will be telling a different time from the sundial. They may be up to 15 minutes different because your watch is assuming that all days are equal in length. With all these artificial difficulties to contend with, it is quite a surprise that interest in sundials continues at all. But interest is in fact growing.
Sundial societies exist in Britain and many other countries, and their membership is expanding.
You are very welcome to join too. We hope that Sundials on the Internet will give you some idea of the world of sundials - its complexity and its fascination.