Define a period

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How many working days in year 2005?

Here is the detail of the calculation:

Because 2005 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 252 working days in 2005.

Here is the list of these 8 public holidays:

1. Pesach : Sunday, 24 April, 2005
2. Yom Ha-Atzmaut : Thursday, 12 May, 2005
3. Shavuot : Monday, 13 June, 2005
4. Rosh Hashanah : Tuesday, 4 October, 2005
5. Rosh Hashanah : Wednesday, 5 October, 2005
6. Yom Kippur : Thursday, 13 October, 2005
7. Sukkot : Tuesday, 18 October, 2005
8. Shemini Atzeret / Simchat Torah : Tuesday, 25 October, 2005

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

1. Purim : Friday, 25 March, 2005
2. Shvi'i shel Pesach : Saturday, 30 April, 2005