For electric utilities, as determined by the North American Electric Reliability Council (NERC), the' BUSINESS DAY' typically begins at 6 A. M. (the hour ending 0700) for a 24-hour period. Holidays are also determined by NERC and are separate from U. S.-designated holidays. For futures and options contracts, business days are trading days as determined by the Exchange board prior to the start of the year.
Barry Goldsmith
| APA | Barry Goldsmith. (2010). business day. Retrieved September 20, 2026, from http://smartdefine.org/business_day/definitions/1149140 |
| Chicago | Barry Goldsmith. 2010. "business day" http://smartdefine.org/business_day/definitions/1149140 (accessed September 20, 2026). |
| Harvard | Barry Goldsmith 2010, business day, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/business_day/definitions/1149140>. |
| MLA | Barry Goldsmith. "business day" 21 October 2010. Web. 20 September 2026. <http://smartdefine.org/business_day/definitions/1149140> |