Define a period

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How many working days in year 1978?

Here is the detail of the calculation:

Because 1978 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 249 working days in 1978.

Here is the list of these 11 public holidays:

1. New Year's Day observance : Monday, 2 January, 1978
2. Human Rights Day : Tuesday, 21 March, 1978
3. Good Friday : Friday, 24 March, 1978
4. Family Day : Monday, 27 March, 1978
5. Freedom Day : Thursday, 27 April, 1978
6. Workers' Day : Monday, 1 May, 1978
7. Youth Day : Friday, 16 June, 1978
8. National Women's Day : Wednesday, 9 August, 1978
9. Heritage Day observance : Monday, 25 September, 1978
10. Christmas Day : Monday, 25 December, 1978
11. Day of Goodwill : Tuesday, 26 December, 1978

And here are the 3 public holidays falling on a weekend:

1. New Year's Day : Sunday, 1 January, 1978
2. Heritage Day : Sunday, 24 September, 1978
3. Day of Reconciliation : Saturday, 16 December, 1978