NKCH observes the following six national holidays. Observance of each holiday will begin at 11:00 PM the day before the holiday and end at 10:59 PM the day of the holiday.
| New Year's Day | January 1st |
| Memorial Day | Last Monday in May |
| Independence Day | July 4th |
| Labor Day | First Monday in September |
| Thanksgiving Day | Fourth Thursday in November |
| Christmas Day | December 25th |
