As of : The calculator counts business days between two dates, or adds them, using US federal (OPM) or Spanish (BOE) holidays. In 2027 there are 249 business days in the US and 254 in Spain, using national holidays only. It covers 2026 and 2027 and rejects dates outside that range.
Published: · Data updated:
Count the business days between two dates, or find the date that is N business days away, skipping Saturdays, Sundays and official holidays. Pick the US (OPM federal holidays) or Spain (BOE working holidays, nationally or for your community). Coverage is 2026–2027.
Coverage: 2026–2027 (data checked October 27, 2026). Free, no sign-up, nothing is sent from your browser.
Data transcribed from these sources on: .
| Measure (2027) | United States (OPM) | Spain (BOE, national) |
|---|---|---|
| Weekdays (Mon–Fri) | 261 | 261 |
| Holidays on a weekday | 12 | 7 |
| Business days | 249 | 254 |
Formula: business days = weekdays (Mon–Fri) − holidays that fall on a weekday
Worked example: 2027, US: 261 − 12 = 249; Spain: 261 − 7 = 254
| Date | Holiday (BOE, nationwide) |
|---|---|
| January 1, 2026 | Año Nuevo |
| January 6, 2026 | Epifanía del Señor |
| April 3, 2026 | Viernes Santo |
| May 1, 2026 | Fiesta del Trabajo |
| August 15, 2026 | Asunción de la Virgen |
| October 12, 2026 | Fiesta Nacional de España |
| December 8, 2026 | Inmaculada Concepción |
| December 25, 2026 | Natividad del Señor |
| January 1, 2027 | Año Nuevo |
| January 6, 2027 | Epifanía del Señor |
| March 26, 2027 | Viernes Santo |
| May 1, 2027 | Fiesta del Trabajo |
| October 12, 2027 | Fiesta Nacional de España |
| November 1, 2027 | Todos los Santos |
| December 6, 2027 | Día de la Constitución Española |
| December 8, 2027 | Inmaculada Concepción |
| December 25, 2027 | Natividad del Señor |
| Date | OPM |
|---|---|
| January 1, 2026 | New Year's Day |
| January 19, 2026 | Birthday of Martin Luther King, Jr. |
| February 16, 2026 | Washington's Birthday |
| May 25, 2026 | Memorial Day |
| June 19, 2026 | Juneteenth National Independence Day |
| July 3, 2026 | Independence Day |
| September 7, 2026 | Labor Day |
| October 12, 2026 | Columbus Day |
| November 11, 2026 | Veterans Day |
| November 26, 2026 | Thanksgiving Day |
| December 25, 2026 | Christmas Day |
| January 1, 2027 | New Year's Day |
| January 18, 2027 | Birthday of Martin Luther King, Jr. |
| February 15, 2027 | Washington's Birthday |
| May 31, 2027 | Memorial Day |
| June 18, 2027 | Juneteenth National Independence Day |
| July 5, 2027 | Independence Day |
| September 6, 2027 | Labor Day |
| October 11, 2027 | Columbus Day |
| November 11, 2027 | Veterans Day |
| November 25, 2027 | Thanksgiving Day |
| December 24, 2027 | Christmas Day |
| December 31, 2027 | New Year's Day (observed, 2028) |
Business day = Monday to Friday that is not a holiday in the chosen calendar. US: the observed days off in OPM's federal holiday list. Spain: the dates in the BOE working-holidays resolutions for 2026 and 2027; with no community selected only nationwide holidays count (all 19 communities and autonomous cities), and with a community selected its own holidays are counted too.
Between two dates: the start date is counted, the end date is optional (checkbox). Adding days: the start date is day 0; negative numbers go backwards.
Not legal, payroll or travel advice: confirm with the official source.
No. Business days are Monday to Friday that are not holidays.
US: OPM federal holidays as observed. Spain: the BOE working-holidays resolutions for 2026 and 2027, nationwide or for the community you pick.
The official lists loaded here cover 2026–2027 only; the tool refuses dates outside them rather than guess.