multiple progression rates

[BlueKnight22]

I am looking for a way to progress the angles in both RA-Naibod and also mean quotidian in the same chart (simultaneously). [2 different progressed ascendants, for example, in the chart] I have Solar Fire but you can only do them one at a time. Is there an application or an internet site that will allow me to do this? I have looked but I can not find one.

I can't even find a way to generate an ephemeris of progressed planets and angles. Again, Solar Fire will only allow you to generate an ephemeris of transiting planets.

Any information on this would be very helpful to me. Thank you.

[Jim Eshelman]

I am looking for a way to progress the angles in both RA-Naibod and also mean quotidian in the same chart (simultaneously). [2 different progressed ascendants, for example, in the chart] I have Solar Fire but you can only do them one at a time. Is there an application or an internet site that will allow me to do this? I have looked but I can not find one.

Not to my knowledge.

I can't even find a way to generate an ephemeris of progressed planets and angles. Again, Solar Fire will only allow you to generate an ephemeris of transiting planets.

Interesting question. One of the computer-generated products Gary Duncan had available when I lived with him was what he called a lifetime progressed ephemeris, which in a time that nobody had their own computer was a wonderful thing, making hard stuff unbelievably easy. Once I had my own computer, though, it never occurred to me to replicate that since I could go straight to the progressed chart I wanted (and tables of progressed aspects was even more useful).

I'm glancing through Solar Fire and don't find a way to do this. I can think of ways to fake it very easily with a combination of Solar Fire and Excel, but it wouldn't include the selection of angle rates you want. If I come across away, I'll mention it but, at the moment, I don't think it's there. (You might consider asking on the Solar Fire support page on Facebook in case someone else has found a way.)

[Jim Eshelman]

Here's the way I mentioned of combining SF and Excel to get a limited version of what you want.

In Solar Fire, click Dynamic > Ephemeris Generator. For starting time, input your birth date and birth time. Add, say, 100 days and put the ending date and time (again, your birth time). Set the time zone to your birth time zone and pick other things you want, like the planet set you want - include the angles.

The output will be your progressed positions including angles at Naibod-RA rate (which I used to think was the correct rate, an opinion I eventually got forced out of). Click Export and save this as an Excel spreadsheet. When this opens, you just have to edit the first column: It will be your birthday for each year of life, so I'd put in your birth year on the first line and then drag it down to duplicate it. If you want, edit the top row as a label of the chart. (You have to do this for your birthday or the trick with the angles doesn't work automatically.)

[BlueKnight22]

That is very helpful! Thank you. I just ran it and it works perfectly.

What I can not figure out is how to run it to generate the Mean Quotidian angles (for Tropical).

When I run it for the Mean Quotidian ascendant it produces different results than when I secondary progress the Mean Quotidian AC forward in steps of 1 year.

[Jim Eshelman]

What I can not figure out is how to run it to generate the Mean Quotidian angles (for Tropical).

When I run it for the Mean Quotidian ascendant it produces different results than when I secondary progress the Mean Quotidian AC forward in steps of 1 year.

Do you mean as an ephemeris? That would be rough (unless, of course, somebody specifically programmed it).

It's easy to run the chart itself, though. Here's the easiest way to monitor it with Solar Fire. Under "Solar Fire Tips," I posted a modified tri-wheel that sets the MIDDLE wheel as progressions so that this is the chart that gives the cusps. viewtopic.php?f=9&t=12

Download and substitute this as your default tri-wheel ring. Then just pick your natal (for the locality where you are currently located) and click Dynamic > Animate Triwheel. You'll get natal planets in the inmost ring, progressed in the middle, transits on the outside and you can easily shift the date or use the errors to move it forward and backwards one day at a time.

There is a mathematical problem with SF and all other current software on this, though. In fairness, I should call this a theoretical problem, though we will soon be in a place to confirm it. The problem is that the correct formula for secondary progressions should be one mean solar day equals one sidereal year, while all existing software uses one tropical year. (Since you favor the Tropical zodiac, you may disagree in theory.) This creates a double problem as one ages:

(1) If you are calculating tropically, then there is the matter of precession distorting transiting planets to quotidian angles, though natal and progressed planets won't have this problem. By age 72, the error is 1° (half a degree at age 36, etc.).

(2) The problem of using the tropical year instead of sidereal year doubles the problem, because it creates a separate (more or less unrelated) error that is almost exactly the same rate as precession. (I overcame this in Mark Pottenger's wonderful CCRS software years ago by forcing the sidereal year to be used if one were using the Sidereal zodiac; but the error exists in SF.)

This means that, as one approaches age 70, close to 2° error on quotidian angles exists. You can cut this in half by calculating everything in the Sidereal zodiac, but it still leaves the second error. This will be overcome in the next few months as Mike Nelson's free TMSA software adds transits and progressions, since he'll use the correct formula.