I just learned why Robin Williams' chart is calculated in CST rather than CDT on astro.com and astrotheme.
In Chicago in the 1950s, birth certificates had to register the time of birth in CST even during daylight savings time. (A strange law indeed.) So, daylight savings time was in effect but the law required the time of birth to be listed in standard time.
So, his correct chart should be the 0 Scorpio rising chart, reflecting the daylight savings time that was in effect. Astro.com and astrotheme appear to be posting an incorrect chart.
I suppose that astrologers doing charts for births in Chicago in the 1950's (before July 1, 1959 actually) should be aware of this strange law.
Here's the source of my information: http://m.galacticcenter.org/main/articles-and-case-studies/time-changes.html
In Chicago in the 1950s, birth certificates had to register the time of birth in CST even during daylight savings time. (A strange law indeed.) So, daylight savings time was in effect but the law required the time of birth to be listed in standard time.
So, his correct chart should be the 0 Scorpio rising chart, reflecting the daylight savings time that was in effect. Astro.com and astrotheme appear to be posting an incorrect chart.
I suppose that astrologers doing charts for births in Chicago in the 1950's (before July 1, 1959 actually) should be aware of this strange law.
Here's the source of my information: http://m.galacticcenter.org/main/articles-and-case-studies/time-changes.html