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 245 public holidays that do not fall during a weekend and we obtain 245 working days in 2038.
 Here is the list of these 245 public holidays: 
 
 1. New Year's Day : Friday, January 1, 2038 
2. Martin Luther King Day : Monday, January 18, 2038 
3. Washington's Birthday : Monday, February 15, 2038 
4. César Chávez Day : Wednesday, March 31, 2038 
5. Good Friday : Friday, April 23, 2038 
6. Confederate Memorial Day : Monday, April 26, 2038 
7. Memorial Day : Monday, May 31, 2038 
8. Juneteenth (observance) : Friday, June 18, 2038 
9. Independence Day (observance) : Monday, July 5, 2038 
10. Lyndon Baines Johnson Day : Friday, August 27, 2038 
11. Labor Day : Monday, September 6, 2038 
12. Veterans Day : Thursday, November 11, 2038 
13. Thanksgiving : Thursday, November 25, 2038 
14. Black Friday : Friday, November 26, 2038 
15. Christmas Eve : Friday, December 24, 2038 
16. New Year's Day (observance) : Friday, December 31, 2038 
And here are the 4 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 
4. December 26 : Sunday, December 26, 2038