Dear Mario, I have now read all your messages again. As Jim Talliman says...
> Thanks for some very interesting scholarship! One important thing you said is: When in Italy the hour system changed with the new hours "ab occasu solis", nothing changed for lawyers and notaries, the roman civil day still ruled and it rules till now. TO CONFIRM: this means that the legal day and the legal date always changed at midnight in Italy (in Roman times, in times when Italian hours were used and, of course, today)? You also say: When [in 1336] Milan built the first bell clock with 24 hours counted "ab occasu" (by sunset) something incredible happened... all Europe changed hour system... This (almost) suggests that the introduction of clocks was responsible for the change in hour systems in Europe but you then explain that... It is not correct to say that clocks changed the time system ... because there exist clocks before the 24 italian hours and they can work with temporal hours... I can believe that the early clock-makers tried to show temporal hours. IF such clocks existed then, clearly, they would not change the time system because they used old time system! Here are two slightly different proposals. 1. It IS correct to say that EQUAL-HOURS clocks changed the time system (and the Milan clock is of special significance). 2. After the introduction of equal-hours clocks the time system changed but it is unwise to argue that these clocks CAUSED this change. Which proposal do you prefer? Very best wishes Frank --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial