Define a period

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How many working days in year 2000?

Here is the detail of the calculation:

Because 2000 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 2000.

Here is the list of these 9 public holidays:

1. National Day : Wednesday, 15 March, 2000
2. Good Friday : Friday, 21 April, 2000
3. Easter Monday : Monday, 24 April, 2000
4. Labour Day : Monday, 1 May, 2000
5. Pentecost Monday : Monday, 12 June, 2000
6. National Day : Monday, 23 October, 2000
7. All Saints' Day : Wednesday, 1 November, 2000
8. Christmas Day : Monday, 25 December, 2000
9. Second Day of Christmas : Tuesday, 26 December, 2000

And here are the 4 public holidays falling on a weekend:

1. New Year's Day : Saturday, 1 January, 2000
2. Easter Sunday : Sunday, 23 April, 2000
3. Pentecost Sunday : Sunday, 11 June, 2000
4. State Foundation Day : Sunday, 20 August, 2000