honestly, if you join a Discord or Facebook group or just google, people know exactly where to Raid in each specific week. Specifically the names of the gyms. Not just spoofers but people who know that the wave will handle these sponsored gyms in these specific parks like the specific Starbucks in Central Park in NY, or otherwise. Reddit, silph road, etc offer exact answers.
If you are local or traveling there you can pretty much gaurantee. Some people have 10 Mewtwo’s, and it isn’t based on guessing or sheer luck, it is their strategic decision to just go for it.
P.S. First time I saw this. Looks like it will notify you of another Ex-Raid (even including when you are not part of it), so that you cannot even spin a gym. Lol he Gym is literally local so I now know where to Ex-Raid: Amazing! Must be god saying “For all the effort and sharing information here is a place you won’t even need to spoof!”
View attachment 100095
Here is a starting point created as recently as Jan 29: