Define a period

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How many working days in year 2018?

Here is the detail of the calculation:

Because 2018 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 2018.

Here is the list of these 7 public holidays:

1. Yom Ha-Atzmaut : Thursday, 19 April, 2018
2. Shavuot : Sunday, 20 May, 2018
3. Rosh Hashanah : Monday, 10 September, 2018
4. Rosh Hashanah : Tuesday, 11 September, 2018
5. Yom Kippur : Wednesday, 19 September, 2018
6. Sukkot : Monday, 24 September, 2018
7. Shemini Atzeret / Simchat Torah : Monday, 1 October, 2018

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

1. Pesach : Saturday, 31 March, 2018
2. Shvi'i shel Pesach : Friday, 6 April, 2018