Define a period

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How many working days in year 2031?

Here is the detail of the calculation:

Because 2031 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 15 public holidays that do not fall during a weekend and we obtain 246 working days in 2031.

Here is the list of these 15 public holidays:

1. 신정 : Wednesday, 1 January, 2031
2. Seollal / Korean New Year Holiday : Wednesday, 22 January, 2031
3. Seollal / Korean New Year Holiday : Thursday, 23 January, 2031
4. Seollal / Korean New Year Holiday : Friday, 24 January, 2031
5. 삼일절 : Monday, 3 March, 2031
6. 어린이날 : Monday, 5 May, 2031
7. 석가탄신일 : Wednesday, 28 May, 2031
8. 현충일 : Friday, 6 June, 2031
9. 광복절 : Friday, 15 August, 2031
10. 추석 : Tuesday, 30 September, 2031
11. 추석 : Wednesday, 1 October, 2031
12. 추석 : Thursday, 2 October, 2031
13. 개천절 : Friday, 3 October, 2031
14. 한글날 : Thursday, 9 October, 2031
15. 성탄절 : Thursday, 25 December, 2031

And here is the public holiday falling on a weekend:

1. 삼일절 : Saturday, 1 March, 2031