Steve, I did my research and the results are surprising. I did a natal chart on an Italian site. it applied the -1 hour correction for daylight saving time, turning the 15:20 time to 14:20 time., even as th eEnglish, or America site.
But, after having treble-checked, the data from teh Italian agency which keeps track of timing are clear about it: in Italy from 1948 to 1965 there has been no daylight saving time, so my 15:20 is actually a 15:20 and needs no correction.
The conclusion is that the chart softwares sometiems may apply the wrong correction for Italy in 1960 (an maybe other years as well).
To have the right natal chart in the first software used, I should enter 16:20 as time of Birth, which the software will convert to 15:20 universal , or military time, using the latter to build the chart. Maybe the 2nd software you used did not have such bug and applied the correction correctly, if I understood well after reading your first post again. So the ones with 15:20 as actual tiem of Birth are the right ones.
i think we should explore this idea of universal time.
http://en.wikipedia.org/wiki/Universal_Time You see whether Italy has daylight savings time or not it has to conform to Greenwich meantime so that a chart can be composed with the right placement of the planets and houses. No matter where you are born the time of your birth has to be converted to Greenwich meantime because that time is used as a universal time that all ephemeris are using. In simpler terms; We do not have the position of the planets from every part of the earth. We subtract and add as a result of time differences from Greenwich England. Greenwich meantime refers to solar time not human made time references.
http://en.wikipedia.org/wiki/Greenwich_Mean_Time
