How a Solar Return is read
The order of factors follows Ciro Discepolo. The first is which house of the natal chart the Solar Return Ascendant falls into: that’s the main area of the year. The second is the house where the Solar Return Sun stands: that’s where your energy goes. The third is the house where three or more planets gather. Overlaying the Solar Return houses on the natal chart is the basis of Alexander Volguine’s method.
Then come the sign of the Solar Return Ascendant (the tone of the year), the Midheaven (goals), the ruler of the Ascendant, the Moon (where there will be the most change), the angular planets (the loudest of the year) and close aspects from the Solar Return planets to the natal ones.
What each of the twelve houses means in a Solar Return, how a Solar Return house differs from a natal house, and why the Solar Return Sun moves back two to four houses each year — in the article “Solar Return houses”. The houses themselves and their meaning in the natal chart are in the guide.
How we calculate
The moment of the Solar Return is computed from NASA JPL DE440 ephemerides, with the same apparent longitude of the Sun as in the natal chart: checked against the Swiss Ephemeris to the second. The zodiac is tropical, with no correction for precession. Houses are Placidus, and above the Arctic Circle — Porphyry. The time zone of the place follows the history of time zones on the date of the birthday.
What you won’t find here
“Dangerous” houses and advice to travel to another city for your birthday for the sake of a “right” Solar Return. There’s no data that this works, and you can’t judge by a single year.