Define a period

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How many working days in year 1994?

Here is the detail of the calculation:

Because 1994 is not a leap year, it has 365 days.

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

Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 248 working days in 1994.

Here is the list of these 12 public holidays:

1. Seollal / Korean New Year Holiday : Wednesday, 9 February, 1994
2. Seollal / Korean New Year Holiday : Thursday, 10 February, 1994
3. Seollal / Korean New Year Holiday : Friday, 11 February, 1994
4. 삼일절 : Tuesday, 1 March, 1994
5. 어린이날 : Thursday, 5 May, 1994
6. 석가탄신일 : Wednesday, 18 May, 1994
7. 현충일 : Monday, 6 June, 1994
8. 광복절 : Monday, 15 August, 1994
9. 추석 : Monday, 19 September, 1994
10. 추석 : Tuesday, 20 September, 1994
11. 추석 : Wednesday, 21 September, 1994
12. 개천절 : Monday, 3 October, 1994

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

1. 신정 : Saturday, 1 January, 1994
2. 한글날 : Sunday, 9 October, 1994
3. 성탄절 : Sunday, 25 December, 1994