Define a period

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How many working days in year 1988?

Here is the detail of the calculation:

Because 1988 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 254 working days in 1988.

Here is the list of these 7 public holidays:

1. New Year's Day : Friday, 1 January, 1988
2. National Day : Tuesday, 15 March, 1988
3. Good Friday : Friday, 1 April, 1988
4. Easter Monday : Monday, 4 April, 1988
5. Pentecost Monday : Monday, 23 May, 1988
6. All Saints' Day : Tuesday, 1 November, 1988
7. Second Day of Christmas : Monday, 26 December, 1988

And here are the 6 public holidays falling on a weekend:

1. Easter Sunday : Sunday, 3 April, 1988
2. Labour Day : Sunday, 1 May, 1988
3. Pentecost Sunday : Sunday, 22 May, 1988
4. State Foundation Day : Saturday, 20 August, 1988
5. National Day : Sunday, 23 October, 1988
6. Christmas Day : Sunday, 25 December, 1988