Bentleys Roof 1% Club

Twice was also my gut instinct...but now I'm over thinking. What about just before 11:45, for example?

The hour hand will be just before the 12, will there be a moment when the minute hand is similarly just before the 45mins (the 9) e.g. 11:42 ish? I dunno, just wondering.

And while pondering on that I guess I've sailed way past the 30 seconds I'm allowed to answer the question ☹️
 
In theory every hour the hands will be at 90 degrees because they rotate through the full 360 degrees every hour. But the the question is how many times that happens in 24 hours ?
 
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