Ah now, I could be sarcastic and say 'That would be 60minutes'.
But I won't 'cos I a good kitty.

I once had a Junior engineer panicking because he'd timed an operation and it was way out of spec'.
I strolled over and counted as the operation took place.
one and
two and
three and...
all the way up to 8.
Which was about how long it should take....
'Nothing wrong with' that I said.

It turned out that he'd borrowed a stop watch production engineering...It was a special stop watch used for time and motion studies which worked in decimals of a minute....

So my answer is...
It depends how you measure it!
Del

There's always trouble when converting between Metric minutes & Imperial ones. I think we should instead adopt a system measuring time in lux, since some parts of our days are brighter than others. Lunchtime being an example.

But I think the first step here would be to define a "standard man". And then work outward from there.

About 180 New York minutes.

Standard man hour:

10 minutes in porta-john;

10 minutes smoking;

10 minutes telling you why it won't work;

10 minutes getting ladder;

10 minutes changing bulb;

10 minutes returning ladder.

(Times may vary.)These are minimum!

If varies from country to country, depending upon each individual country's standards of a man and an hour. In some countries, women are under different standards from men.

Please forgive my somewhat smart-alecky answer...

Details for standard man-hour (SMH)

1/PI f^{^2}(x) dx = a(0)^{^2} / 2 + (k=1..) (a(k)^{^2} + b(k)^{^2})Where:

f = Yearly gross revenue (US$)/ man hours available (mean)

x = (Fixed asset depreciation + Yearly net income) / man hours available (actual)

d = Efficiency of manpower (represent as decimal)

a = Effective use of parking lot attendant (represent as decimal)

k = (Number of urinals available to workforce + number of toilets available to women / man hours available (actual)) * 3.1415926537

b = Aggravation factor of design-detail staff

This gives us $86.11 per man hour cost, and $71.14 gross realized revenue per man hour. ^{_{Hmmm Perhaps I should review the formulation of # toilets available to women...}}

Now, this formula works in North Dakota (Central Time zone only). Adjustments to the formula may need to be made for your actual conditions.

^{With apologies to Parseval...}