Here is the detail of the calculation:
Since 1917 is not a leap year, it has 365 days.
Let’s remove 52 Saturdays and 52 Sundays. There are 261 days left.
Now we remove 12 holidays that do not fall on a weekend and we get 249 working days in 1917.
Here is the list of these 12 holidays:
1. New Year’s Day : Monday, January 1, 1917
2. Martin Luther King Day : Monday, January 15, 1917
3. President’s Day : Monday, February 19, 1917
4. Memorial Day : Monday, May 28, 1917
5. Juneteenth : Tuesday, June 19, 1917
6. Independence Day : Wednesday, July 4, 1917
7. Labor Day : Monday, September 3, 1917
8. Columbus Day : Monday, October 8, 1917
9. Veterans Day Observance : Monday, November 12, 1917
10. Thanksgiving : Thursday, November 22, 1917
11. Black Friday : Friday, November 23, 1917
12. Christmas : Tuesday, December 25, 1917
And here is the holiday that falls on a weekend:
1. Veterans Day : Sunday, November 11, 1917
