Define a period

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How many working days in year 1936?

Here is the detail of the calculation:

Because 1936 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1936.

Here is the list of these 11 public holidays:

1. New Year's Day : Wednesday, 1 January, 1936
2. Seollal / Korean New Year Holiday : Thursday, 23 January, 1936
3. Seollal / Korean New Year Holiday : Friday, 24 January, 1936
4. Independence Movement Day : Monday, 2 March, 1936
5. Children's Day : Tuesday, 5 May, 1936
6. Buddha's Birthday : Thursday, 28 May, 1936
7. Chuseok / Midautumn Festival : Tuesday, 29 September, 1936
8. Chuseok / Midautumn Festival : Wednesday, 30 September, 1936
9. Chuseok / Midautumn Festival : Thursday, 1 October, 1936
10. Hangeul Day : Friday, 9 October, 1936
11. Christmas Day : Friday, 25 December, 1936

And here are the 5 public holidays falling on a weekend:

1. Seollal / Korean New Year Holiday : Saturday, 25 January, 1936
2. Independence Movement Day : Sunday, 1 March, 1936
3. Memorial Day : Saturday, 6 June, 1936
4. Liberation Day : Saturday, 15 August, 1936
5. National Foundation Day : Saturday, 3 October, 1936