Define a period

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How many working days in year 1929?

Here is the detail of the calculation:

Because 1929 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 1929.

Here is the list of these 13 public holidays:

1. 신정 : Tuesday, 1 January, 1929
2. Seollal / Korean New Year Holiday : Monday, 11 February, 1929
3. 삼일절 : Friday, 1 March, 1929
4. 어린이날 : Monday, 6 May, 1929
5. 석가탄신일 : Thursday, 16 May, 1929
6. 현충일 : Thursday, 6 June, 1929
7. 광복절 : Thursday, 15 August, 1929
8. 추석 : Monday, 16 September, 1929
9. 추석 : Tuesday, 17 September, 1929
10. 추석 : Wednesday, 18 September, 1929
11. 개천절 : Thursday, 3 October, 1929
12. 한글날 : Wednesday, 9 October, 1929
13. 성탄절 : Wednesday, 25 December, 1929

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

1. Seollal / Korean New Year Holiday : Saturday, 9 February, 1929
2. Seollal / Korean New Year Holiday : Sunday, 10 February, 1929
3. 어린이날 : Sunday, 5 May, 1929