Collision Graphs: Timing Graphs
Explaining Collision Graphs (aka Collision Charts)
If you decide to enter the positive astrology synastry section (via the Relationship Services link in the menu bar) and create a personal relationship database of your own, there are one or two things you can do to ensure that you have a greater understanding of the graphs and matrices used in progressed synastry.
To understand synastry matrices navigate to the Synastry Matrices page which will ensure you understand the synastry matrices which will accompany your synastry reports. Synastry matrices are like snapshots that show you what was hot and cold in your relationship astrology at any given time. Collision graphs expand upon these matrices and allow you to see how the important planetary connections discussed in your synastry report and highlighted in your matrices, will develop through time. They show the growth and development of synastry (or relationship) aspects.
To generate a collision (or timing) graph you need to enter two ID numbers from your personal database into the fields marked ID#1 and ID#2 in the Collision Graph section of your personal database:
As Tip 1 says, you should choose a date a few years before the start of your relationship to get a good perspective on any important collisions, which will be displayed in a graph like this, which is for a relationship which began in mid-1997:
Horizontal and Vertical Axes
The horizontal axis along the bottom shows December (12th month) for the years 1985 to 2004 and therefore shows a twenty year period. The vertical axis on the left hand side shows the number of degrees your relationship aspect is from being exact at any point in time. As you can see from this graph, the two collisions (trines of progressing Venus to natal and then progressing Venus) became exact in late 1996 and mid-1997. The first aspect (the white dotted line) was 12 degrees from exact in 1987 and the second (the orange line) was twelve degrees from exact in 1991. The horizontal blue line shows the baseline orb. This shows the time during which the aspect will be most powerfully and intensely felt. (This is also called the two-degree orb as it shows when the aspect passed the two degree point). As can be seen in the case of the orange line, it was very powerful between 1996 (when it passed the baseline) and 1998 (when it separated beyond the baseline orb). The white dotted aspect was within two degrees from 1995 to 1998.
Changing dates to generate reports for other times in your relationships
For you to create a collision graph for any two people in your personal database, they both have to have the same relationship start date. This date is set when you first enter data into the database. If you wish to match two people who are not in a relationship, or you wish to look at a different time period (for which you can also generate a synastry report), you can change or coordinate any two people in your database.
All you have to do is take any two people in your relationship database and enter their ID numbers into the ID fields of the Change the Start Date of the Relationship section of the database page. After you press the recalculation button a new set of planetary aspects will be calculated for the date you entered, and the synastry matrices for this date will be displayed ( use the back button to return to your database and generate report and collision graphs). Of course, the natal planet positions will not change and important natal synastry aspects will still be included in your report and in your synastry matrices.