Define a period

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How many working days in year 1906?

Here is the detail of the calculation:

Because 1906 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 1906.

Here is the list of these 15 public holidays:

1. New Year's Day : Monday, 1 January, 1906
2. Seollal / Korean New Year Holiday : Wednesday, 24 January, 1906
3. Seollal / Korean New Year Holiday : Thursday, 25 January, 1906
4. Seollal / Korean New Year Holiday : Friday, 26 January, 1906
5. Independence Movement Day : Thursday, 1 March, 1906
6. Buddha's Birthday : Tuesday, 1 May, 1906
7. Children's Day : Monday, 7 May, 1906
8. Buddha's Birthday : Wednesday, 30 May, 1906
9. Memorial Day : Wednesday, 6 June, 1906
10. Liberation Day : Wednesday, 15 August, 1906
11. Chuseok / Midautumn Festival : Monday, 1 October, 1906
12. Chuseok / Midautumn Festival : Tuesday, 2 October, 1906
13. Chuseok / Midautumn Festival : Wednesday, 3 October, 1906
14. Hangeul Day : Tuesday, 9 October, 1906
15. Christmas Day : Tuesday, 25 December, 1906

And here is the public holiday falling on a weekend:

1. Children's Day : Saturday, 5 May, 1906