Try this:

    "What is the date for the next Friday the 13th with a full moon and a lunar eclipse?"

The answer I get is either,

"This may take a while" --- followed by nothing

or ...

A bunch of verbose drivel that basically amounts to, "It's rare"

... but no date --- which is better than just making one up.

AI has trouble when it doesn't have a workable example to pattern it's answer after.

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