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How many working days in year 2147?

Here is the detail of the calculation:

Because 2147 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 5 public holidays that do not fall during a weekend and we obtain 255 working days in 2147.

Here is the list of these 5 public holidays:

1. Republic Day : четверг, 26 январь, 2147
2. Good Friday : пятница, 14 апрель, 2147
3. Independence Day : вторник, 15 август, 2147
4. Mahatma Gandhi's Birthday : понедельник, 2 октябрь, 2147
5. Christmas : понедельник, 25 декабрь, 2147

And here are the 4 public holidays falling on a weekend:

1. New Year's Day : воскресенье, 1 январь, 2147
2. Makar Sankranti : суббота, 14 январь, 2147
3. Maharaja Shivaji Jayanti : воскресенье, 19 февраль, 2147
4. Christmas Eve : воскресенье, 24 декабрь, 2147