dadsnook2000
Calculating the MC-Solar Cycle
The MC does not progress at a flat or linear rate from one Solar Return position to the next. It has to be modified by the Equation of Time. Ignoring this EoT adjustment can throw off the dates by up to 8 days. Most programs that are popular among serious astrologers such as Solar Fire, Kepler, Matrix, etc. can not provide this type of progression for this purpose. On my blog site, the Ninth House, I have a set of worked examples of how to download RIYAL and configure it and use it to generate these charts.
Of course, one can always use their software to generate a solar return and then progress the S/R to any date. After the chart is calculated one can determine the EoT variation and then adjust the chart to reflect the correct time --- thereby changing the angles.
The MC does not progress at a flat or linear rate from one Solar Return position to the next. It has to be modified by the Equation of Time. Ignoring this EoT adjustment can throw off the dates by up to 8 days. Most programs that are popular among serious astrologers such as Solar Fire, Kepler, Matrix, etc. can not provide this type of progression for this purpose. On my blog site, the Ninth House, I have a set of worked examples of how to download RIYAL and configure it and use it to generate these charts.
Of course, one can always use their software to generate a solar return and then progress the S/R to any date. After the chart is calculated one can determine the EoT variation and then adjust the chart to reflect the correct time --- thereby changing the angles.