Fire 6 and Solar Fire Gold (versions 7 and 8) do two types of primary directions. To
access them from the Solar Fire main screen,
1. Select Dynamic
> Transits & Progressions to open the
Reports Selection window
select the Radix Chart, Period of Report, Location and Point and Aspect
Selection as you wish.
Event Selection, select Directions to Radix.
Directions, click the dropdown arrow and select either "Primary
Mundane" or "Primary van Dam." These are the two types of primaries
that Solar Fire offers. The Solar Fire Gold Help explains these types
directions are created by the diurnal rotation of the earth
about its own polar axis. Hence each planet or chart angle is directed
along its own diurnal arc, starting from its natal position. Each
degree of rotation is deemed to correspond to 1 year in the life of the
individual. Aspects are deemed to be formed between directed
and natal planets when their relative positions in their diurnal arcs
are in angular relationship. (Note that this is quite different from
aspects of zodiacal longitude.). For example, if the Sun is natally
situated in the 10th house at 90% along its arc from its rise to its
culmination, then Saturn will be in natal mundane square to it when it
to a position in the 1st house which is at 90% along its arc from its
nadir to its rise across the horizon. If this occurs after Saturn has
by 24.5 degrees along its diurnal arc, then it is deemed that directed
Saturn makes a mundane square to the Sun when the individual is 24 and
a half years old.
This method is also known as
"Placidian" directions as apparently practiced by Ptolemy,
Alcabitius, Montulmo, Lucas Gauricus, Simmonite, Zadkiel, Alan Leo,
Pracht, Kloekler and Placidus himself.
Van Dam Primary
This method has also been
Event Analysis”. This is a variation of the Primary
Mundane (Placidian) method, using a different time-measure, as
introduced by Wim van Dam. The derived positions are given in zodiacal
longitude (unlike primary mundane directions,
which are expressed in term of a pseudo-arc).
desired, you can select Precessed or Converse or both.
the View button and you will get a list of primary direction hit dates.
Within each basic method of primaries, you can select a rate or "key"
for converting degrees of primary motion into time. All the rates are
roughly 1 degree of motion per year, but there are minor variations
that can change the timing of the hits by quite a bit. To change the
rate or key in Solar Fire,
the Main Screen, select Preferences > Edit Settings.
2. In the
Preferences window, select the Progs/Dirns tab.
3. In the
Rate for Primary Directions area, select one of the 3 rates in the
Year per Degree (Ptolemy) -
The progression rate is exactly one degree of arc for each year of life.
Naibod (1 Year for 59’08’’)
The progression rate is 59’08’’ of arc for each year of life.
Natal Solar Rate
progression rate is the natal Sun’s rate of motion in R.A. for each
year of life.