If you can forsee the event, but not predict the time, it's just as bad as an even you cannot forsee.
If all rivers suddenly turned to wine and killed all the crops? Not a black swan event, water gets turned to wine in the bible.
As you can see this attitude makes the phrase "black swan event" very useful.
You guys should really go get some nuance at the retail store.
If you can forsee the event, but not predict the time, it's just as bad as an even you cannot forsee.