Define a period

...

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. New Year's Day : Tuesday, 1 January, 1929
2. Seollal / Korean New Year Holiday : Monday, 11 February, 1929
3. Independence Movement Day : Friday, 1 March, 1929
4. Children's Day : Monday, 6 May, 1929
5. Buddha's Birthday : Thursday, 16 May, 1929
6. Memorial Day : Thursday, 6 June, 1929
7. Liberation Day : Thursday, 15 August, 1929
8. Chuseok / Midautumn Festival : Monday, 16 September, 1929
9. Chuseok / Midautumn Festival : Tuesday, 17 September, 1929
10. Chuseok / Midautumn Festival : Wednesday, 18 September, 1929
11. National Foundation Day : Thursday, 3 October, 1929
12. Hangeul Day : Wednesday, 9 October, 1929
13. Christmas Day : 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. Children's Day : Sunday, 5 May, 1929