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How many working days in year 1985?
Here is the detail of the calculation:
Because 1985 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 1985.
 Here is the list of these 13 public holidays: 
 
 1. New Year's Day : tuesday, january 1, 1985 
2. Martin Luther King Day : monday, january 21, 1985 
3. Lincoln's Birthday : tuesday, february 12, 1985 
4. Washington's Birthday : monday, february 18, 1985 
5. Truman Day : wednesday, may 8, 1985 
6. Memorial Day : monday, may 27, 1985 
7. Juneteenth National Independence Day : wednesday, june 19, 1985 
8. Independence Day : thursday, july 4, 1985 
9. Labor Day : monday, september 2, 1985 
10. Columbus Day : monday, october 14, 1985 
11. Veterans Day : monday, november 11, 1985 
12. Thanksgiving : thursday, november 28, 1985 
13. Christmas : wednesday, december 25, 1985