Define a period

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How many working days in year 2004?

Here is the detail of the calculation:

Because 2004 is a leap year, it has 366 days.

Let's remove 53 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 2004.

Here is the list of these 7 public holidays:

1. Pesach : Tuesday, 6 April, 2004
2. Shvi'i shel Pesach : Monday, 12 April, 2004
3. Yom Ha-Atzmaut : Tuesday, 27 April, 2004
4. Shavuot : Wednesday, 26 May, 2004
5. Rosh Hashanah : Thursday, 16 September, 2004
6. Sukkot : Thursday, 30 September, 2004
7. Shemini Atzeret / Simchat Torah : Thursday, 7 October, 2004

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

1. Rosh Hashanah : Friday, 17 September, 2004
2. Yom Kippur : Saturday, 25 September, 2004