Results:
Obviously no quake happened in the Osaka region around the specified time. However, about 18 hours later than the predicted time, there was a 7.3 mag quake in the Indonesia area. There seems to be a great deal of variability in the length of time it takes a magna flow to travel from the edge of the core of the Earth to the crust. In the case of the Oregon swarm, it seemed to take about 38 hours. In this case, it took 57 hours.
Timing is quite difficult to predict, as is latitudinal position. The method seems to work well for predicting the longitude of a quake, which although a breakthrough, does not provide location-specific information. It should, however, still follow logically that flow times should be roughly consistent from region to region.
For example, we can now speculate that when a magnetometer plunge occurs when the Pacific coast of the U.S. is facing the Sun, the activity follows about 38 hours later (that's only the beginning of the swarm.) The swarm continued for a couple of days, suggesting that the pressure exerted continued over time, starting about 38 hours after the discharge, but requiring about 48 hours from that time for pressure to abate.
Over in the Pacific RIm, the pathway that magma takes to reach the surface may be more convoluted, which would result in a longer delay between core discharge and seismic event. The delay may also be longer depending upon whether the event is a swarm or a single major quake. The 57-hour timeframe would seem to be more typical particularly for the Pacific Rim.
To further test this theory, we will watch for magnetometer plunges of a particularly rapid nature and with out any upticks in the line graph during that plunge.
https://earthquake.usgs.gov/earthquakes/eventpage/us6000gc2a/executive
Rather than pointing to a particular city or even region, we would only be able to predict longitude with this system, with a margin for error, and the time window would be more than likely be anywhere from 48-60 hours centered on a time 57 hours after a core discharge.
Magma flow paths could be influenced by currents in the mantle, with exact epicenters determined ultimately, as was laid out on December 8th, by which sections of fault contain air pockets, something which could be estimated by analyzing the history of smaller quakes along the faults. The area of greatest vulnerability to major quakes will be those areas where there are the greatest volume of small quakes with plate-shift direction running perpendicular to the fault line.