Frequently asked questions

Charts > Circular charts

How can I determine which harmonic chart should be generated?

Enter a number in the 'start date' field in the page for 'extended chart selection'. The first number there is used as harmonic number, in the case of harmonic horoscopes.
What is the purpose of the "Nine Persona Charts"?

This is a method, developed by the German astrologer Peter Orban. Please, read the article on "Persona Charts" in the Understanding Astrology section of this website for more information.
Is it possible to show aspects between transits (or solar return) and natal positions?

Not directly. You can do a work around, if you enter the data of your solar return or transit chart as the chart of a second person and then select the chart type "Synastry Chart (2)" for your natal and the transit chart. This shows aspects between the outer (transit) and inner (natal) chart.
What is the difference between the "corrected" and "uncorrected" Davison Relationship Chart?

The Medium Coeli (MC) computed for the time midpoint, which is the basis of the Davison chart, deviates very slightly (usually by less than 1 degree) from the composite MC (computed as the midpoint between the two personal MCs). The time correction applied to the standard Davison chart brings its MC into perfect alignment with the meridian axis of the composite chart. Most astrologers read the composite chart and the Davison chart together.
How can I change the Universal Time on transit charts?

There's a trick. Display the transit chart and see that it shows UT: 00:00:00 below the date, in red, in the upper left corner.
Now edit the URL in the browser and append. &stx2=vshgmt=16 and press ENTER.
You will get the transits for UT 16:00.
For setting the minute, you need to use decimal hour fractions, e.g. vshgmt=16.5 will result in 16:30 UT etc.
How is the progressed ascendant calculated?

The sideral time at birth (RAMC) is progressed with the daily sidereal time progress, also called the Naibod key, which as about 3m55s. For each year of progression, RAMC is progressed by this amount. MC, Ascendant and house cusps of the progressed chart are computed from the progressed RAMC.