Define a period

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How many working days in year 2053?

Here is the detail of the calculation:

Because 2053 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 2053.

Here is the list of these 13 public holidays:

1. 신정 : Wednesday, 1 January, 2053
2. Seollal / Korean New Year Holiday : Tuesday, 18 February, 2053
3. Seollal / Korean New Year Holiday : Wednesday, 19 February, 2053
4. Seollal / Korean New Year Holiday : Thursday, 20 February, 2053
5. 삼일절 : Monday, 3 March, 2053
6. 어린이날 : Monday, 5 May, 2053
7. 현충일 : Friday, 6 June, 2053
8. 광복절 : Friday, 15 August, 2053
9. 추석 : Thursday, 25 September, 2053
10. 추석 : Friday, 26 September, 2053
11. 개천절 : Friday, 3 October, 2053
12. 한글날 : Thursday, 9 October, 2053
13. 성탄절 : Thursday, 25 December, 2053

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

1. 삼일절 : Saturday, 1 March, 2053
2. 석가탄신일 : Sunday, 25 May, 2053
3. 추석 : Saturday, 27 September, 2053