Chile

Business days calculator

Count working days in Chile (no Saturdays, Sundays or holidays)

Between two dates Add business days

Count working days in Chile (no Saturdays, Sundays or holidays)

This month Next 30 days Until year end +10 business days +15 business days +30 business days

6412

business days

From September 19, 2000 to July 22, 2026

We swapped the dates because “to” was earlier than “from”.

Business day 6412
Weekend 2696
Holidays 329

9438 days in the period

9438

Total days

2696

Weekend

329

Holidays

Holidays in the period

Army Day Tue 19 Sep 2000
Encounter of Two Worlds Thu 12 Oct 2000
Protestant Churches Day Tue 31 Oct 2000
All Saints' Day Wed 1 Nov 2000
Immaculate Conception Fri 8 Dec 2000
Christmas Mon 25 Dec 2000
New Year's Day Mon 1 Jan 2001
Good Friday Fri 13 Apr 2001
Holy Saturday Sat 14 Apr 2001
Easter Sunday Sun 15 Apr 2001
Labor Day Tue 1 May 2001
Navy Day Mon 21 May 2001
Battle of Arica Day Thu 7 Jun 2001
Indigenous Peoples' Day Thu 21 Jun 2001
Saints Peter and Paul Fri 29 Jun 2001
Our Lady of Mount Carmel Mon 16 Jul 2001
Assumption Wed 15 Aug 2001
O'Higgins' Birthday Mon 20 Aug 2001
Independence Day Tue 18 Sep 2001
Army Day Wed 19 Sep 2001
Encounter of Two Worlds Fri 12 Oct 2001
Protestant Churches Day Wed 31 Oct 2001
All Saints' Day Thu 1 Nov 2001
Immaculate Conception Sat 8 Dec 2001
Christmas Tue 25 Dec 2001
New Year's Day Tue 1 Jan 2002
Good Friday Fri 29 Mar 2002
Holy Saturday Sat 30 Mar 2002
Easter Sunday Sun 31 Mar 2002
Labor Day Wed 1 May 2002
Navy Day Tue 21 May 2002
Battle of Arica Day Fri 7 Jun 2002
Indigenous Peoples' Day Fri 21 Jun 2002
Saints Peter and Paul Mon 1 Jul 2002
Our Lady of Mount Carmel Tue 16 Jul 2002
Assumption Thu 15 Aug 2002
O'Higgins' Birthday Tue 20 Aug 2002
Independence Day Wed 18 Sep 2002
Army Day Thu 19 Sep 2002
Encounter of Two Worlds Sat 12 Oct 2002
Protestant Churches Day Thu 31 Oct 2002
All Saints' Day Fri 1 Nov 2002
Immaculate Conception Sun 8 Dec 2002
Christmas Wed 25 Dec 2002
New Year's Day Wed 1 Jan 2003
Good Friday Fri 18 Apr 2003
Holy Saturday Sat 19 Apr 2003
Easter Sunday Sun 20 Apr 2003
Labor Day Thu 1 May 2003
Navy Day Wed 21 May 2003
Battle of Arica Day Sat 7 Jun 2003
Indigenous Peoples' Day Sat 21 Jun 2003
Saints Peter and Paul Sun 29 Jun 2003
Our Lady of Mount Carmel Wed 16 Jul 2003
Assumption Fri 15 Aug 2003
O'Higgins' Birthday Wed 20 Aug 2003
Independence Day Thu 18 Sep 2003
Army Day Fri 19 Sep 2003
Encounter of Two Worlds Sun 12 Oct 2003
Protestant Churches Day Fri 31 Oct 2003
All Saints' Day Sat 1 Nov 2003
Immaculate Conception Mon 8 Dec 2003
Christmas Thu 25 Dec 2003
New Year's Day Thu 1 Jan 2004
Good Friday Fri 9 Apr 2004
Holy Saturday Sat 10 Apr 2004
Easter Sunday Sun 11 Apr 2004
Labor Day Sat 1 May 2004
Navy Day Fri 21 May 2004
Battle of Arica Day Mon 7 Jun 2004
Indigenous Peoples' Day Mon 21 Jun 2004
Saints Peter and Paul Tue 29 Jun 2004
Our Lady of Mount Carmel Fri 16 Jul 2004
Assumption Sun 15 Aug 2004
O'Higgins' Birthday Fri 20 Aug 2004
Independence Day Sat 18 Sep 2004
Army Day Sun 19 Sep 2004
Encounter of Two Worlds Tue 12 Oct 2004
Protestant Churches Day Sun 31 Oct 2004
All Saints' Day Mon 1 Nov 2004
Immaculate Conception Wed 8 Dec 2004
Christmas Sat 25 Dec 2004
New Year's Day Sat 1 Jan 2005
Good Friday Fri 25 Mar 2005
Holy Saturday Sat 26 Mar 2005
Easter Sunday Sun 27 Mar 2005
Labor Day Sun 1 May 2005
Navy Day Sat 21 May 2005
Battle of Arica Day Tue 7 Jun 2005
Indigenous Peoples' Day Tue 21 Jun 2005
Saints Peter and Paul Wed 29 Jun 2005
Our Lady of Mount Carmel Sat 16 Jul 2005
Assumption Mon 15 Aug 2005
O'Higgins' Birthday Sat 20 Aug 2005
Independence Day Sun 18 Sep 2005
Army Day Mon 19 Sep 2005
Encounter of Two Worlds Wed 12 Oct 2005
Protestant Churches Day Mon 31 Oct 2005
All Saints' Day Tue 1 Nov 2005
Immaculate Conception Thu 8 Dec 2005
Christmas Sun 25 Dec 2005
New Year's Day Sun 1 Jan 2006
Good Friday Fri 14 Apr 2006
Holy Saturday Sat 15 Apr 2006
Easter Sunday Sun 16 Apr 2006
Labor Day Mon 1 May 2006
Navy Day Sun 21 May 2006
Battle of Arica Day Wed 7 Jun 2006
Indigenous Peoples' Day Wed 21 Jun 2006
Saints Peter and Paul Thu 29 Jun 2006
Our Lady of Mount Carmel Sun 16 Jul 2006
Assumption Tue 15 Aug 2006
O'Higgins' Birthday Sun 20 Aug 2006
Independence Day Mon 18 Sep 2006
Army Day Tue 19 Sep 2006
Encounter of Two Worlds Thu 12 Oct 2006
Protestant Churches Day Tue 31 Oct 2006
All Saints' Day Wed 1 Nov 2006
Immaculate Conception Fri 8 Dec 2006
Christmas Mon 25 Dec 2006
New Year's Day Mon 1 Jan 2007
Good Friday Fri 6 Apr 2007
Holy Saturday Sat 7 Apr 2007
Easter Sunday Sun 8 Apr 2007
Labor Day Tue 1 May 2007
Navy Day Mon 21 May 2007
Battle of Arica Day Thu 7 Jun 2007
Indigenous Peoples' Day Thu 21 Jun 2007
Saints Peter and Paul Fri 29 Jun 2007
Our Lady of Mount Carmel Mon 16 Jul 2007
Assumption Wed 15 Aug 2007
O'Higgins' Birthday Mon 20 Aug 2007
Independence Day Tue 18 Sep 2007
Army Day Wed 19 Sep 2007
Encounter of Two Worlds Fri 12 Oct 2007
Protestant Churches Day Wed 31 Oct 2007
All Saints' Day Thu 1 Nov 2007
Immaculate Conception Sat 8 Dec 2007
Christmas Tue 25 Dec 2007
New Year's Day Tue 1 Jan 2008
Good Friday Fri 21 Mar 2008
Holy Saturday Sat 22 Mar 2008
Easter Sunday Sun 23 Mar 2008
Labor Day Thu 1 May 2008
Navy Day Wed 21 May 2008
Battle of Arica Day Sat 7 Jun 2008
Indigenous Peoples' Day Sat 21 Jun 2008
Saints Peter and Paul Sun 29 Jun 2008
Our Lady of Mount Carmel Wed 16 Jul 2008
Assumption Fri 15 Aug 2008
O'Higgins' Birthday Wed 20 Aug 2008
Independence Day Thu 18 Sep 2008
Army Day Fri 19 Sep 2008
Encounter of Two Worlds Sun 12 Oct 2008
Protestant Churches Day Fri 31 Oct 2008
All Saints' Day Sat 1 Nov 2008
Immaculate Conception Mon 8 Dec 2008
Christmas Thu 25 Dec 2008
New Year's Day Thu 1 Jan 2009
Good Friday Fri 10 Apr 2009
Holy Saturday Sat 11 Apr 2009
Easter Sunday Sun 12 Apr 2009
Labor Day Fri 1 May 2009
Navy Day Thu 21 May 2009
Battle of Arica Day Sun 7 Jun 2009
Indigenous Peoples' Day Sun 21 Jun 2009
Saints Peter and Paul Mon 29 Jun 2009
Our Lady of Mount Carmel Thu 16 Jul 2009
Assumption Sat 15 Aug 2009
O'Higgins' Birthday Thu 20 Aug 2009
Independence Day Fri 18 Sep 2009
Army Day Sat 19 Sep 2009
Encounter of Two Worlds Mon 12 Oct 2009
Protestant Churches Day Sat 31 Oct 2009
All Saints' Day Sun 1 Nov 2009
Immaculate Conception Tue 8 Dec 2009
Christmas Fri 25 Dec 2009
New Year's Day Fri 1 Jan 2010
Good Friday Fri 2 Apr 2010
Holy Saturday Sat 3 Apr 2010
Easter Sunday Sun 4 Apr 2010
Labor Day Sat 1 May 2010
Navy Day Fri 21 May 2010
Battle of Arica Day Mon 7 Jun 2010
Indigenous Peoples' Day Mon 21 Jun 2010
Saints Peter and Paul Tue 29 Jun 2010
Our Lady of Mount Carmel Fri 16 Jul 2010
Assumption Sun 15 Aug 2010
O'Higgins' Birthday Fri 20 Aug 2010
Independence Day Sat 18 Sep 2010
Army Day Sun 19 Sep 2010
Encounter of Two Worlds Tue 12 Oct 2010
Protestant Churches Day Sun 31 Oct 2010
All Saints' Day Mon 1 Nov 2010
Immaculate Conception Wed 8 Dec 2010
Christmas Sat 25 Dec 2010
New Year's Day Sat 1 Jan 2011
Good Friday Fri 22 Apr 2011
Holy Saturday Sat 23 Apr 2011
Easter Sunday Sun 24 Apr 2011
Labor Day Sun 1 May 2011
Navy Day Sat 21 May 2011
Battle of Arica Day Tue 7 Jun 2011
Indigenous Peoples' Day Tue 21 Jun 2011
Saints Peter and Paul Wed 29 Jun 2011
Our Lady of Mount Carmel Sat 16 Jul 2011
Assumption Mon 15 Aug 2011
O'Higgins' Birthday Sat 20 Aug 2011
Independence Day Sun 18 Sep 2011
Army Day Mon 19 Sep 2011
Encounter of Two Worlds Wed 12 Oct 2011
Protestant Churches Day Mon 31 Oct 2011
All Saints' Day Tue 1 Nov 2011
Immaculate Conception Thu 8 Dec 2011
Christmas Sun 25 Dec 2011
New Year's Day Sun 1 Jan 2012
Good Friday Fri 6 Apr 2012
Holy Saturday Sat 7 Apr 2012
Easter Sunday Sun 8 Apr 2012
Labor Day Tue 1 May 2012
Navy Day Mon 21 May 2012
Battle of Arica Day Thu 7 Jun 2012
Indigenous Peoples' Day Thu 21 Jun 2012
Saints Peter and Paul Fri 29 Jun 2012
Our Lady of Mount Carmel Mon 16 Jul 2012
Assumption Wed 15 Aug 2012
O'Higgins' Birthday Mon 20 Aug 2012
Independence Day Tue 18 Sep 2012
Army Day Wed 19 Sep 2012
Encounter of Two Worlds Fri 12 Oct 2012
Protestant Churches Day Wed 31 Oct 2012
All Saints' Day Thu 1 Nov 2012
Immaculate Conception Sat 8 Dec 2012
Christmas Tue 25 Dec 2012
New Year's Day Tue 1 Jan 2013
Good Friday Fri 29 Mar 2013
Holy Saturday Sat 30 Mar 2013
Easter Sunday Sun 31 Mar 2013
Labor Day Wed 1 May 2013
Navy Day Tue 21 May 2013
Battle of Arica Day Fri 7 Jun 2013
Indigenous Peoples' Day Fri 21 Jun 2013
Saints Peter and Paul Mon 1 Jul 2013
Our Lady of Mount Carmel Tue 16 Jul 2013
Assumption Thu 15 Aug 2013
O'Higgins' Birthday Tue 20 Aug 2013
Independence Day Wed 18 Sep 2013
Army Day Thu 19 Sep 2013
Encounter of Two Worlds Sat 12 Oct 2013
Protestant Churches Day Thu 31 Oct 2013
All Saints' Day Fri 1 Nov 2013
Immaculate Conception Sun 8 Dec 2013
Christmas Wed 25 Dec 2013
New Year's Day Wed 1 Jan 2014
Good Friday Fri 18 Apr 2014
Holy Saturday Sat 19 Apr 2014
Easter Sunday Sun 20 Apr 2014
Labor Day Thu 1 May 2014
Navy Day Wed 21 May 2014
Battle of Arica Day Sat 7 Jun 2014
Indigenous Peoples' Day Sat 21 Jun 2014
Saints Peter and Paul Sun 29 Jun 2014
Our Lady of Mount Carmel Wed 16 Jul 2014
Assumption Fri 15 Aug 2014
O'Higgins' Birthday Wed 20 Aug 2014
Independence Day Thu 18 Sep 2014
Army Day Fri 19 Sep 2014
Encounter of Two Worlds Sun 12 Oct 2014
Protestant Churches Day Fri 31 Oct 2014
All Saints' Day Sat 1 Nov 2014
Immaculate Conception Mon 8 Dec 2014
Christmas Thu 25 Dec 2014
New Year's Day Thu 1 Jan 2015
Good Friday Fri 3 Apr 2015
Holy Saturday Sat 4 Apr 2015
Easter Sunday Sun 5 Apr 2015
Labor Day Fri 1 May 2015
Navy Day Thu 21 May 2015
Battle of Arica Day Sun 7 Jun 2015
Indigenous Peoples' Day Sun 21 Jun 2015
Saints Peter and Paul Mon 29 Jun 2015
Our Lady of Mount Carmel Thu 16 Jul 2015
Assumption Sat 15 Aug 2015
O'Higgins' Birthday Thu 20 Aug 2015
Independence Day Fri 18 Sep 2015
Army Day Sat 19 Sep 2015
Encounter of Two Worlds Mon 12 Oct 2015
Protestant Churches Day Sat 31 Oct 2015
All Saints' Day Sun 1 Nov 2015
Immaculate Conception Tue 8 Dec 2015
Christmas Fri 25 Dec 2015
New Year's Day Fri 1 Jan 2016
Good Friday Fri 25 Mar 2016
Holy Saturday Sat 26 Mar 2016
Easter Sunday Sun 27 Mar 2016
Labor Day Sun 1 May 2016
Navy Day Sat 21 May 2016
Battle of Arica Day Tue 7 Jun 2016
Indigenous Peoples' Day Tue 21 Jun 2016
Saints Peter and Paul Wed 29 Jun 2016
Our Lady of Mount Carmel Sat 16 Jul 2016
Assumption Mon 15 Aug 2016
O'Higgins' Birthday Sat 20 Aug 2016
Independence Day Sun 18 Sep 2016
Army Day Mon 19 Sep 2016
Encounter of Two Worlds Wed 12 Oct 2016
Protestant Churches Day Mon 31 Oct 2016
All Saints' Day Tue 1 Nov 2016
Immaculate Conception Thu 8 Dec 2016
Christmas Sun 25 Dec 2016
New Year's Day Sun 1 Jan 2017
Good Friday Fri 14 Apr 2017
Holy Saturday Sat 15 Apr 2017
Easter Sunday Sun 16 Apr 2017
Labor Day Mon 1 May 2017
Navy Day Sun 21 May 2017
Battle of Arica Day Wed 7 Jun 2017
Indigenous Peoples' Day Wed 21 Jun 2017
Saints Peter and Paul Thu 29 Jun 2017
Our Lady of Mount Carmel Sun 16 Jul 2017
Assumption Tue 15 Aug 2017
O'Higgins' Birthday Sun 20 Aug 2017
Independence Day Mon 18 Sep 2017
Army Day Tue 19 Sep 2017
Encounter of Two Worlds Thu 12 Oct 2017
Protestant Churches Day Tue 31 Oct 2017
All Saints' Day Wed 1 Nov 2017
Immaculate Conception Fri 8 Dec 2017
Christmas Mon 25 Dec 2017
New Year's Day Mon 1 Jan 2018
Good Friday Fri 30 Mar 2018
Holy Saturday Sat 31 Mar 2018
Easter Sunday Sun 1 Apr 2018
Labor Day Tue 1 May 2018
Navy Day Mon 21 May 2018
Battle of Arica Day Thu 7 Jun 2018
Indigenous Peoples' Day Thu 21 Jun 2018
Saints Peter and Paul Fri 29 Jun 2018
Our Lady of Mount Carmel Mon 16 Jul 2018
Assumption Wed 15 Aug 2018
O'Higgins' Birthday Mon 20 Aug 2018
Independence Day Tue 18 Sep 2018
Army Day Wed 19 Sep 2018
Encounter of Two Worlds Fri 12 Oct 2018
Protestant Churches Day Wed 31 Oct 2018
All Saints' Day Thu 1 Nov 2018
Immaculate Conception Sat 8 Dec 2018
Christmas Tue 25 Dec 2018
New Year's Day Tue 1 Jan 2019
Good Friday Fri 19 Apr 2019
Holy Saturday Sat 20 Apr 2019
Easter Sunday Sun 21 Apr 2019
Labor Day Wed 1 May 2019
Navy Day Tue 21 May 2019
Battle of Arica Day Fri 7 Jun 2019
Indigenous Peoples' Day Fri 21 Jun 2019
Saints Peter and Paul Mon 1 Jul 2019
Our Lady of Mount Carmel Tue 16 Jul 2019
Assumption Thu 15 Aug 2019
O'Higgins' Birthday Tue 20 Aug 2019
Independence Day Wed 18 Sep 2019
Army Day Thu 19 Sep 2019
Encounter of Two Worlds Sat 12 Oct 2019
Protestant Churches Day Thu 31 Oct 2019
All Saints' Day Fri 1 Nov 2019
Immaculate Conception Sun 8 Dec 2019
Christmas Wed 25 Dec 2019
New Year's Day Wed 1 Jan 2020
Good Friday Fri 10 Apr 2020
Holy Saturday Sat 11 Apr 2020
Easter Sunday Sun 12 Apr 2020
Labor Day Fri 1 May 2020
Navy Day Thu 21 May 2020
Battle of Arica Day Sun 7 Jun 2020
Indigenous Peoples' Day Sun 21 Jun 2020
Saints Peter and Paul Mon 29 Jun 2020
Our Lady of Mount Carmel Thu 16 Jul 2020
Assumption Sat 15 Aug 2020
O'Higgins' Birthday Thu 20 Aug 2020
Independence Day Fri 18 Sep 2020
Army Day Sat 19 Sep 2020
Encounter of Two Worlds Mon 12 Oct 2020
Protestant Churches Day Sat 31 Oct 2020
All Saints' Day Sun 1 Nov 2020
Immaculate Conception Tue 8 Dec 2020
Christmas Fri 25 Dec 2020
New Year's Day Fri 1 Jan 2021
Good Friday Fri 2 Apr 2021
Holy Saturday Sat 3 Apr 2021
Easter Sunday Sun 4 Apr 2021
Labor Day Sat 1 May 2021
Navy Day Fri 21 May 2021
Battle of Arica Day Mon 7 Jun 2021
Indigenous Peoples' Day Mon 21 Jun 2021
Saints Peter and Paul Tue 29 Jun 2021
Our Lady of Mount Carmel Fri 16 Jul 2021
Assumption Sun 15 Aug 2021
O'Higgins' Birthday Fri 20 Aug 2021
Independence Day Sat 18 Sep 2021
Army Day Sun 19 Sep 2021
Encounter of Two Worlds Tue 12 Oct 2021
Protestant Churches Day Sun 31 Oct 2021
All Saints' Day Mon 1 Nov 2021
Immaculate Conception Wed 8 Dec 2021
Christmas Sat 25 Dec 2021
New Year's Day Sat 1 Jan 2022
Good Friday Fri 15 Apr 2022
Holy Saturday Sat 16 Apr 2022
Easter Sunday Sun 17 Apr 2022
Labor Day Sun 1 May 2022
Navy Day Sat 21 May 2022
Battle of Arica Day Tue 7 Jun 2022
Indigenous Peoples' Day Tue 21 Jun 2022
Saints Peter and Paul Wed 29 Jun 2022
Our Lady of Mount Carmel Sat 16 Jul 2022
Assumption Mon 15 Aug 2022
O'Higgins' Birthday Sat 20 Aug 2022
Independence Day Sun 18 Sep 2022
Army Day Mon 19 Sep 2022
Encounter of Two Worlds Wed 12 Oct 2022
Protestant Churches Day Mon 31 Oct 2022
All Saints' Day Tue 1 Nov 2022
Immaculate Conception Thu 8 Dec 2022
Christmas Sun 25 Dec 2022
New Year's Day Sun 1 Jan 2023
Good Friday Fri 7 Apr 2023
Holy Saturday Sat 8 Apr 2023
Easter Sunday Sun 9 Apr 2023
Labor Day Mon 1 May 2023
Navy Day Sun 21 May 2023
Battle of Arica Day Wed 7 Jun 2023
Indigenous Peoples' Day Wed 21 Jun 2023
Saints Peter and Paul Thu 29 Jun 2023
Our Lady of Mount Carmel Sun 16 Jul 2023
Assumption Tue 15 Aug 2023
O'Higgins' Birthday Sun 20 Aug 2023
Independence Day Mon 18 Sep 2023
Army Day Tue 19 Sep 2023
Encounter of Two Worlds Thu 12 Oct 2023
Protestant Churches Day Tue 31 Oct 2023
All Saints' Day Wed 1 Nov 2023
Immaculate Conception Fri 8 Dec 2023
Christmas Mon 25 Dec 2023
New Year's Day Mon 1 Jan 2024
Good Friday Fri 29 Mar 2024
Holy Saturday Sat 30 Mar 2024
Easter Sunday Sun 31 Mar 2024
Labor Day Wed 1 May 2024
Navy Day Tue 21 May 2024
Battle of Arica Day Fri 7 Jun 2024
Indigenous Peoples' Day Fri 21 Jun 2024
Saints Peter and Paul Mon 1 Jul 2024
Our Lady of Mount Carmel Tue 16 Jul 2024
Assumption Thu 15 Aug 2024
O'Higgins' Birthday Tue 20 Aug 2024
Independence Day Wed 18 Sep 2024
Army Day Thu 19 Sep 2024
Encounter of Two Worlds Sat 12 Oct 2024
Protestant Churches Day Thu 31 Oct 2024
All Saints' Day Fri 1 Nov 2024
Immaculate Conception Sun 8 Dec 2024
Christmas Wed 25 Dec 2024
New Year's Day Wed 1 Jan 2025
Good Friday Fri 18 Apr 2025
Holy Saturday Sat 19 Apr 2025
Easter Sunday Sun 20 Apr 2025
Labor Day Thu 1 May 2025
Navy Day Wed 21 May 2025
Battle of Arica Day Sat 7 Jun 2025
Indigenous Peoples' Day Sat 21 Jun 2025
Saints Peter and Paul Sun 29 Jun 2025
Our Lady of Mount Carmel Wed 16 Jul 2025
Assumption Fri 15 Aug 2025
O'Higgins' Birthday Wed 20 Aug 2025
Independence Day Thu 18 Sep 2025
Army Day Fri 19 Sep 2025
Encounter of Two Worlds Sun 12 Oct 2025
Protestant Churches Day Fri 31 Oct 2025
All Saints' Day Sat 1 Nov 2025
Immaculate Conception Mon 8 Dec 2025
Christmas Thu 25 Dec 2025
New Year's Day Thu 1 Jan 2026
Good Friday Fri 3 Apr 2026
Holy Saturday Sat 4 Apr 2026
Easter Sunday Sun 5 Apr 2026
Labor Day Fri 1 May 2026
Navy Day Thu 21 May 2026
Battle of Arica Day Sun 7 Jun 2026
Indigenous Peoples' Day Sun 21 Jun 2026
Saints Peter and Paul Mon 29 Jun 2026
Our Lady of Mount Carmel Thu 16 Jul 2026

Preguntas frecuentes

What counts as a business day?

In CivicCalendar a business day is a Monday–Friday that is not a legal holiday in Chile. Saturdays and Sundays are not counted.

Is the start day included?

Yes. In “Between two dates” mode both dates are inclusive. In “Add business days”, counting starts on the start date if that date is a business day.

Are regional holidays considered?

National holidays and regional holidays defined for the country are used. If a regional holiday does not apply to your area, the result may differ.

Is this an official calculation?

It is indicative according to current legislation and calendars loaded on the site. For critical legal or labor deadlines, confirm with the relevant rule or authority.