David,
The construction of an analemmatic sundial is the same for all places
with the same latitude.
To make it able to indicate the official time you should take into
account the longitude and the time zone of the place but also the
equation of time and that is not easy.
But a sundial is not intended for indicating the official time.
Therefore you have a watch.
The challenge of a sundial is that it indicates real time and that
it leads to reflecting about the difference between real time and
official time.
Greatings.
Willy LEENDERS
Kloosterlaan 60
B-3500 Hasselt
Tel. 32 (0)11 72 04 47
www.wijzerweb.be
Op 24-nov-08, om 12:17 heeft [EMAIL PROTECTED] het volgende geschreven:
I must be getting old...................
I'm doing a design for an analemmatic dial in France.
France is in the GMT time zone but chooses to be +1 on GMT in the
winter months and +2 in the summer months (daylight saving).
I have the co-ordinates etc for the dial's lat and long - no
problem here.
Am I right in labelling the hour points as follows, for showing
winter months...............
The hour point nearest to the meridian line (which would have been
12 in UK) will be 1 pm in France.
If the dial is to indicate daylight saving hours, then the point
nearest top the meridian will be labelled 2pm.
Best wishes to all in these sun-less days
David Brown
Somerton, Somerset, UK
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