Define a period

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How many working days in year 2020?

Here is the detail of the calculation:

Because 2020 is a leap year, it has 366 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 253 working days in 2020.

Here is the list of these 9 public holidays:

1. New Year's Day : Wednesday, 1 January, 2020
2. Good Friday : Friday, 10 April, 2020
3. Labour Day : Friday, 1 May, 2020
4. Vesak Day : Thursday, 7 May, 2020
5. Hari Raya Puasa : Monday, 25 May, 2020
6. Polling Day : Friday, 10 July, 2020
7. Hari Raya Haji : Friday, 31 July, 2020
8. National Day : Monday, 10 August, 2020
9. Christmas Day : Friday, 25 December, 2020

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

1. Chinese New Year : Saturday, 25 January, 2020
2. Chinese New Year : Sunday, 26 January, 2020
3. Hari Raya Puasa : Sunday, 24 May, 2020
4. National Day : Sunday, 9 August, 2020
5. Deepavali : Saturday, 14 November, 2020