Define a period

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How many working days in year 2017?

Here is the detail of the calculation:

Because 2017 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 7 public holidays that do not fall during a weekend and we obtain 254 working days in 2017.

Here is the list of these 7 public holidays:

1. פסח : Tuesday, 11 April, 2017
2. שביעי של פסח : Monday, 17 April, 2017
3. יום העצמאות : Tuesday, 2 May, 2017
4. שבועות : Wednesday, 31 May, 2017
5. ראש השנה : Thursday, 21 September, 2017
6. סוכות : Thursday, 5 October, 2017
7. שמחת תורה/שמיני עצרת : Thursday, 12 October, 2017

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

1. ראש השנה : Friday, 22 September, 2017
2. יום כיפור : Saturday, 30 September, 2017