Define a period

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How many working days in year 1930?

Here is the detail of the calculation:

Because 1930 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 14 public holidays that do not fall during a weekend and we obtain 247 working days in 1930.

Here is the list of these 14 public holidays:

1. New Year's Day : Wednesday, 1 January, 1930
2. Seollal / Korean New Year Holiday : Wednesday, 29 January, 1930
3. Seollal / Korean New Year Holiday : Thursday, 30 January, 1930
4. Seollal / Korean New Year Holiday : Friday, 31 January, 1930
5. Independence Movement Day : Monday, 3 March, 1930
6. Children's Day : Monday, 5 May, 1930
7. Buddha's Birthday : Tuesday, 6 May, 1930
8. Memorial Day : Friday, 6 June, 1930
9. Liberation Day : Friday, 15 August, 1930
10. National Foundation Day : Friday, 3 October, 1930
11. Chuseok / Midautumn Festival : Monday, 6 October, 1930
12. Chuseok / Midautumn Festival : Tuesday, 7 October, 1930
13. Hangeul Day : Thursday, 9 October, 1930
14. Christmas Day : Thursday, 25 December, 1930

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

1. Independence Movement Day : Saturday, 1 March, 1930
2. Chuseok / Midautumn Festival : Sunday, 5 October, 1930