Define a period

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How many working days in year 2003?

Here is the detail of the calculation:

Because 2003 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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2003.

Here is the list of these 9 public holidays:

1. Нова Година : Wednesday, 1 January, 2003
2. Празник после Нове Године : Thursday, 2 January, 2003
3. Божић : Tuesday, 7 January, 2003
4. Дан после Дана државности Србије : Monday, 17 February, 2003
5. Велики петак : Friday, 25 April, 2003
6. Васкршњи понедељак : Monday, 28 April, 2003
7. Празник рада : Thursday, 1 May, 2003
8. Празник после Празника рада : Friday, 2 May, 2003
9. Дан примирја : Tuesday, 11 November, 2003

And here are the 4 public holidays falling on a weekend:

1. Дан државности Србије : Saturday, 15 February, 2003
2. Дан после Дана државности Србије : Sunday, 16 February, 2003
3. Васкршња субота : Saturday, 26 April, 2003
4. Васкрс : Sunday, 27 April, 2003