Define a period

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How many working days in year 2085?

Here is the detail of the calculation:

Because 2085 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 2085.

Here is the list of these 13 public holidays:

1. 신정 : Monday, 1 January, 2085
2. Seollal / Korean New Year Holiday : Thursday, 25 January, 2085
3. Seollal / Korean New Year Holiday : Friday, 26 January, 2085
4. 삼일절 : Thursday, 1 March, 2085
5. 석가탄신일 : Tuesday, 1 May, 2085
6. 어린이날 : Monday, 7 May, 2085
7. 현충일 : Wednesday, 6 June, 2085
8. 광복절 : Wednesday, 15 August, 2085
9. 추석 : Tuesday, 2 October, 2085
10. 추석 : Wednesday, 3 October, 2085
11. 추석 : Thursday, 4 October, 2085
12. 한글날 : Tuesday, 9 October, 2085
13. 성탄절 : Tuesday, 25 December, 2085

And here are the 2 public holidays falling on a weekend:

1. Seollal / Korean New Year Holiday : Saturday, 27 January, 2085
2. 어린이날 : Saturday, 5 May, 2085