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How many working days in year 2038?
Here is the detail of the calculation:
Because 2038 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 14 public holidays that do not fall during a weekend and we obtain 247 working days in 2038.
 Here is the list of these 14 public holidays: 
 
 1. New Year's Day : Friday, January 1, 2038 
2. Martin Luther King Day : Monday, January 18, 2038 
3. Lincoln's Birthday : Friday, February 12, 2038 
4. Washington's Birthday : Monday, February 15, 2038 
5. Memorial Day : Monday, May 31, 2038 
6. Juneteenth (observance) : Friday, June 18, 2038 
7. Independence Day (observance) : Monday, July 5, 2038 
8. Labor Day : Monday, September 6, 2038 
9. Columbus Day : Monday, October 11, 2038 
10. Election Day : Tuesday, November 2, 2038 
11. Veterans Day : Thursday, November 11, 2038 
12. Thanksgiving : Thursday, November 25, 2038 
13. Christmas (observance) : Friday, December 24, 2038 
14. New Year's Day (observance) : Friday, December 31, 2038 
And here are the 3 public holidays falling on a weekend:
1. Juneteenth National Independence Day : Saturday, June 19, 2038 
2. Independence Day : Sunday, July 4, 2038 
3. Christmas : Saturday, December 25, 2038