>... It was in the hight middle age that you find books that says that every >sign > rise and fall in 15 degree, creating some confusion.... --------------------------
Sorry! you should read «It was in the hight middle age that you find books that says that every sign > rise and fall in 30 degree...» every half Sign = 15 ° = 1 hour = 1/12 of > daylight. Mario --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
