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Hello Yvon,
In a Dutch book about sundials I read that in The Netherlands the definition of the Eot was: EoT = mean time - solar time This means in november the sign is negative. In about 1930 a new and international definition was accepted. EoT = solar time - mean time This means in november the sign is positive. During a certain period both definitions were used, even in the same issue of a magazin. After the second worldwar usualy only the international definition is used. Best wishes, Fer. Fer J. de Vries [EMAIL PROTECTED] http://www.iae.nl/users/ferdv/ Eindhoven, Netherlands lat. 51:30 N long. 5:30 E ----- Original Message ----- From: Yvon Massé <[EMAIL PROTECTED]> To: sundial list <sundial@rrz.uni-koeln.de> Sent: Tuesday, September 25, 2001 12:16 AM Subject: Equation of time > Hello all, > > Ooops!... Of course, I make a mistake: > > >For example in France, traditionally: EoT = real time - mean time > >while in USA: Eot = mean time - real time. > > Please read: > For example in France, traditionally: EoT = local mean time - solar time > while in USA: Eot = solar time - local mean time. > > Yvon > |
