Define a period

...

How many working days in year 2019?

Here is the detail of the calculation:

Because 2019 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 2019.

Here is the list of these 8 public holidays:

1. פורים : Thursday, 21 March, 2019
2. יום העצמאות : Thursday, 9 May, 2019
3. שבועות : Sunday, 9 June, 2019
4. ראש השנה : Monday, 30 September, 2019
5. ראש השנה : Tuesday, 1 October, 2019
6. יום כיפור : Wednesday, 9 October, 2019
7. סוכות : Monday, 14 October, 2019
8. שמחת תורה/שמיני עצרת : Monday, 21 October, 2019

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

1. פסח : Saturday, 20 April, 2019
2. שביעי של פסח : Friday, 26 April, 2019