Define a period

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How many working days in year 2012?

Here is the detail of the calculation:

Because 2012 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 255 working days in 2012.

Here is the list of these 7 public holidays:

1. Yom Ha-Atzmaut : Thursday, 26 April, 2012
2. Shavuot : Sunday, 27 May, 2012
3. Rosh Hashanah : Monday, 17 September, 2012
4. Rosh Hashanah : Tuesday, 18 September, 2012
5. Yom Kippur : Wednesday, 26 September, 2012
6. Sukkot : Monday, 1 October, 2012
7. Shemini Atzeret / Simchat Torah : Monday, 8 October, 2012

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

1. Pesach : Saturday, 7 April, 2012
2. Shvi'i shel Pesach : Friday, 13 April, 2012