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 13 public holidays that do not fall during a weekend and we obtain 248 working days in 2003.

Here is the list of these 13 public holidays:

1. New Year's Day : Wednesday, 1 January, 2003
2. Seollal / Korean New Year Holiday : Friday, 31 January, 2003
3. Independence Movement Day : Monday, 3 March, 2003
4. Children's Day : Monday, 5 May, 2003
5. Buddha's Birthday : Thursday, 8 May, 2003
6. Memorial Day : Friday, 6 June, 2003
7. Liberation Day : Friday, 15 August, 2003
8. Chuseok / Midautumn Festival : Wednesday, 10 September, 2003
9. Chuseok / Midautumn Festival : Thursday, 11 September, 2003
10. Chuseok / Midautumn Festival : Friday, 12 September, 2003
11. National Foundation Day : Friday, 3 October, 2003
12. Hangeul Day : Thursday, 9 October, 2003
13. Christmas Day : Thursday, 25 December, 2003

And here are the 3 public holidays falling on a weekend:

1. Seollal / Korean New Year Holiday : Saturday, 1 February, 2003
2. Seollal / Korean New Year Holiday : Sunday, 2 February, 2003
3. Independence Movement Day : Saturday, 1 March, 2003