His prediction is wrong. He buttonholed it to a few specific days, and missed that window.
As for prior predictions, I went back 6 months. None of his predictions panned out.
Although, admittedly, it's a bit difficult for me to figure out what actually constitutes a prediction since most of them tend to be the kind of vague generality that's hard to grade: "The Mars-Mercury-Jupiter conjunction on 22 September can result in a strong shake later on 23 or 24 September."--what's a "strong shake"? "Stronger seismic activity is likely to occur in the coming days"? These are the kinds of predictions that are worded vaguely enough to be dismissed if they don't come true, and can be highlighted as a miracle of prediction if something does happen.
(I haven't even attempted to grade location because I can't even tell what's supposed to be suggested as possible locations. As noted elsewhere, even guessing that a M6+ earthquake is likely in the next few days isn't a difficult guess, because they'll occur more or less weekly: https://earthquake.usgs.gov/earthquakes/browse/m6-world.php?...).
I went back 6 months to see his history of predictions to see if he had any merit. If you want to be charitable and call this a hit, that's 1 for 5 in predictions. Looking at the history of M7+ earthquakes in the past 3 months, he had no prediction of occurrence for 2 of the 3 earthquakes that have happened (and this pattern of failing to predict M7+ earthquakes continues further back in 2023, I just don't have the stats in front of me right now).
You have provided, to wit, zero evidence of his track record of successful predictions. Not even a (second) example of successful prediction, much less any attempt to actually quantify over any time scale how successful prediction is. And you claim that someone attempting to do the latter is only to conclude my own bias...
Some more data: if you go back to the Wayback Machine archive of his webpage (see https://web.archive.org/web/20231001000000*/ssgeos.org), you can see that there is persistently an earthquake forecast of over 10%, and on frequent basis even 40% or 50%, chance of magnitude 8.5+ earthquakes (right now, it's a 30% chance). The last such earthquake is 2012. Simply put, even on a probabilistic basis, it's an absolute, abject failure of a prediction.
As for prior predictions, I went back 6 months. None of his predictions panned out.
Although, admittedly, it's a bit difficult for me to figure out what actually constitutes a prediction since most of them tend to be the kind of vague generality that's hard to grade: "The Mars-Mercury-Jupiter conjunction on 22 September can result in a strong shake later on 23 or 24 September."--what's a "strong shake"? "Stronger seismic activity is likely to occur in the coming days"? These are the kinds of predictions that are worded vaguely enough to be dismissed if they don't come true, and can be highlighted as a miracle of prediction if something does happen.
(I haven't even attempted to grade location because I can't even tell what's supposed to be suggested as possible locations. As noted elsewhere, even guessing that a M6+ earthquake is likely in the next few days isn't a difficult guess, because they'll occur more or less weekly: https://earthquake.usgs.gov/earthquakes/browse/m6-world.php?...).