Define a period

...

How many working days in year 2004?

Here is the detail of the calculation:

Because 2004 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 3 public holidays that do not fall during a weekend and we obtain 259 working days in 2004.

Here is the list of these 3 public holidays:

1. New Year's Day : Thursday, 1 January, 2004
2. Good Friday : Friday, 9 April, 2004
3. National Day : Monday, 9 August, 2004

And here are the 2 public holidays falling on a weekend:

1. Labour Day : Saturday, 1 May, 2004
2. Christmas Day : Saturday, 25 December, 2004