U.S. federal holidays and business days
A federal holiday that falls on a weekday is commonly removed from a general U.S. business-day count.
How holiday exclusions work
BusinessDayKit uses the listed U.S. federal holiday schedule as an optional exclusion layer. If a holiday lands on a Monday through Friday date, that date is removed from the business-day count when the option is enabled.
If a holiday is observed on a different weekday because the calendar date falls on a weekend, the observed date is the date used for the federal holiday record.
This matters because a holiday may affect business-day counts even when the named holiday date itself is on a weekend. For example, if a Saturday holiday is observed on Friday, the Friday observation is normally the date removed from a federal-holiday business-day count.
When another calendar may apply
Banks, states, schools, employers, and contracts can use schedules that differ from the federal list. For high-impact decisions, compare the site count with the official schedule that applies to the situation.
Federal holidays vs bank holidays
Federal holidays are a common planning baseline, but they are not always identical to every bank processing calendar or employer schedule. A payment, transfer, or payroll process may depend on bank-specific or company-specific cutoffs, so the federal list should be treated as a general source rather than a guarantee.
How BusinessDayKit uses the list
The calculators first remove Saturdays and Sundays. When federal holiday exclusions are enabled, they also remove listed holiday dates that fall on weekdays. Data pages show the source and last-verified date so the calculation can be reviewed instead of being treated as an unexplained number.