Define a period

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How many working days in year 2030?

Here is the detail of the calculation:

Because 2030 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 2030.

Here is the list of these 13 public holidays:

1. 신정 : Tuesday, 1 January, 2030
2. Seollal / Korean New Year Holiday : Monday, 4 February, 2030
3. 삼일절 : Friday, 1 March, 2030
4. 어린이날 : Monday, 6 May, 2030
5. 석가탄신일 : Thursday, 9 May, 2030
6. 현충일 : Thursday, 6 June, 2030
7. 광복절 : Thursday, 15 August, 2030
8. 추석 : Wednesday, 11 September, 2030
9. 추석 : Thursday, 12 September, 2030
10. 추석 : Friday, 13 September, 2030
11. 개천절 : Thursday, 3 October, 2030
12. 한글날 : Wednesday, 9 October, 2030
13. 성탄절 : Wednesday, 25 December, 2030

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

1. Seollal / Korean New Year Holiday : Saturday, 2 February, 2030
2. Seollal / Korean New Year Holiday : Sunday, 3 February, 2030
3. 어린이날 : Sunday, 5 May, 2030