Define a period

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How many working days in year 2097?

Here is the detail of the calculation:

Because 2097 is not a leap year, it has 365 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2097.

Here is the list of these 9 public holidays:

1. Año Nuevo : Tuesday, 1 January, 2097
2. Jueves Santo : Thursday, 28 March, 2097
3. Viernes Santo : Friday, 29 March, 2097
4. Día del Trabajo : Wednesday, 1 May, 2097
5. Día del Ejército : Monday, 1 July, 2097
6. Día de Todos los Santos : Friday, 1 November, 2097
7. Noche Buena : Tuesday, 24 December, 2097
8. Navidad : Wednesday, 25 December, 2097
9. Víspera de Año Nuevo : Tuesday, 31 December, 2097

And here are the 3 public holidays falling on a weekend:

1. Sábado Santo : Saturday, 30 March, 2097
2. Día de la Independencia : Sunday, 15 September, 2097
3. Día de la Revolución : Sunday, 20 October, 2097