Saw your question.... Was a little confused.Wasn't sure whether this was a question about the effects of Prenatal and Postnatal Eclipses?
Or, is this question regarding Lunation Cycles?
At astro com, under their chart selections, there are choices under Progressions--
* Natal and prenatal New Moon
* Natal and Progressed New Moon
Is that what you're looking at?
Dane Rudhyar wrote a book called The Lunation Cycle (Aurora Press).
- http://www.aurorapress.com/html/rudhyar_8.html
I own the book ... the paper is easier to read!
Here is an url to a small section of it, electronically.
Get the book-- there is sooo much more to it.
http://www.mindfire.ca/The%20Lunation%20Cycle/The%20Lunation%20Cycle.htm
It is about the 29 1/2 year cycle with Saturn;
and the 29 1/2 day cycle of Moon (in a month).
This is a spiritual more-'felt' cycle, than anything you could plot with events (although some could happen).
I haven't really studied it in any depth, yet.
Without getting into interpretations---
Astrodienst ( www.astro.com/ ) has a selection that calculates it--
From Home, choose 'Extended Chart Selections'
Make sure to include Part of Fortune on list.
Go to Circular drop menu, and scroll down to
Progressions
-
-
- Natal and pre-natal New Moon
- Natal and progressed New Moon
-
-
Finding pre-natal New Moon is same as...
Opening your ephemeris to your birthday.
The New American Ephemeris 20th Century {up to year 2000-- there's a 21st Century for those born after Millenium},
Rique Pottenger (Michelsen edition)
- http://www.barnesandnoble.com/w/new-american-ephemeris-for-the-20th-century-1900-2000-at-midnight-rique-pottenger/1103720350
{It is possible to find an e-book download for this one.}
Continuing in the Pottenger ephemeris ...
Look at your birthday.
Look below on the page...
Find table for Moon-Phases & Eclipses
Look above your date in that table.
Find New Moon {'blackened dot' or dark moon} just before the date you were born.
THAT is the pre-natal New Moon.
e.g.
my PRE-natal happened May 21. 'NM 0.01 Gemini'
I was born later on the 29th.
Now, back to your ephemeris,
After your pre-natal new moon,
continue down the moon phases until you see the NEXT New Moon (black circle).
This is the NEXT New Moon to occur right AFTER you were born.
Make a note of it ...
e.g.
Mine..
After May 21 NM, the next occurred--
On Jun 20. NM 28.05 Gemini.
{ SN, Total Solar Eclipse lasting 07'08"}
Planet = natal Mercury Gemini 27+(28).
Planet = natal Mars Cancer 2+
{{Rudhyar says if 'Lunation' (we're looking up) happened in degrees of your natal planet, then it is important. Make a note of it.}}
e.g.
mine
After June 20,
NEXT New Moon occurred July 19. NM 26.02 Cancer.
Planet = natal Uranus Cancer 25+
Planet = natal Jupiter Cancer 27+
{{ This is the lunation cycle I am currently in, until 2035. If you look at the chart-wheels drawn by astrodienst, they have the duration, span of dates effective, printed in Red.
.. Also, you'll note around the rim of the wheel, are the MC, AC, and Part of Fortune. }}
You'll want to print out the Data Sheets too.
REFS for more study
(example chart)
- http://www.myss.com/wp-content/uploads/2015/07/CMyssPLC.pdf
- http://www.beyondsunsigns.com/rudhyarcycles.html
That's all I'll leave you for now.
See what you come up with for your own.