Define a period

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How many working days in year 1913?

Here is the detail of the calculation:

Because 1913 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 1913.

Here is the list of these 14 public holidays:

1. New Year's Day : Wednesday, 1 January, 1913
2. Seollal / Korean New Year Holiday : Wednesday, 5 February, 1913
3. Seollal / Korean New Year Holiday : Thursday, 6 February, 1913
4. Seollal / Korean New Year Holiday : Friday, 7 February, 1913
5. Independence Movement Day : Monday, 3 March, 1913
6. Children's Day : Monday, 5 May, 1913
7. Buddha's Birthday : Tuesday, 13 May, 1913
8. Memorial Day : Friday, 6 June, 1913
9. Liberation Day : Friday, 15 August, 1913
10. Chuseok / Midautumn Festival : Monday, 15 September, 1913
11. Chuseok / Midautumn Festival : Tuesday, 16 September, 1913
12. National Foundation Day : Friday, 3 October, 1913
13. Hangeul Day : Thursday, 9 October, 1913
14. Christmas Day : Thursday, 25 December, 1913

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

1. Independence Movement Day : Saturday, 1 March, 1913
2. Chuseok / Midautumn Festival : Sunday, 14 September, 1913