Define a period

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How many working days in year 2051?

Here is the detail of the calculation:

Because 2051 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 2051.

Here is the list of these 7 public holidays:

1. Pesach : Tuesday, 28 March, 2051
2. Shvi'i shel Pesach : Monday, 3 April, 2051
3. Yom Ha-Atzmaut : Tuesday, 18 April, 2051
4. Shavuot : Wednesday, 17 May, 2051
5. Rosh Hashanah : Thursday, 7 September, 2051
6. Sukkot : Thursday, 21 September, 2051
7. Shemini Atzeret / Simchat Torah : Thursday, 28 September, 2051

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

1. Rosh Hashanah : Friday, 8 September, 2051
2. Yom Kippur : Saturday, 16 September, 2051