Dear John, That is a fascinating map...
http://www.travel.com.hk/region/timezone.htm It bears out many of my prejudices and gripes!! Alaska seems to be a whole time-zone wrong and John Pickard's eloquent contribution draws attention to the curious way that Australia is carved up. One particular curiosity is that the time zone for UTC+4 seems to be actively shunned. Maybe this is because 4 is an unlucky number in some cultures :-) To be fair, the Mercator's projection is slightly exaggerating my conjecture. Once you are in the Arctic, time zones are a bit academic. I very much take your point... > If your sundial is located far from its > Prime Meridian in one of these crazy Time > Zones...then designing it with built-in > longitude correction is a must. Yes. Agreed. You also say... > ...at worst, a longitude corrected dial will > only be about 16 minutes off (because of the > Equation of Time). On the average, it is > only off by about seven minutes... Hmmm. I cannot resist pondering that assertion! I feel a separate message coming on... All the best Frank --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
