México

Business days calculator

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

Between two dates Add business days

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

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

14535

business days

From July 26, 2026 to January 1, 2084

Business day 14535
Weekend 5994
Holidays 450

20979 days in the period

20979

Total days

5994

Weekend

450

Holidays

Holidays in the period

Independence Day Wed 16 Sep 2026
Revolution Day Mon 16 Nov 2026
Christmas Day Fri 25 Dec 2026
New Year's Day Fri 1 Jan 2027
Constitution Day Mon 1 Feb 2027
Benito Juárez's Birthday Mon 15 Mar 2027
Maundy Thursday Thu 25 Mar 2027
Good Friday Fri 26 Mar 2027
Labour Day Sat 1 May 2027
Independence Day Thu 16 Sep 2027
Revolution Day Mon 15 Nov 2027
Christmas Day Sat 25 Dec 2027
New Year's Day Sat 1 Jan 2028
Constitution Day Mon 7 Feb 2028
Benito Juárez's Birthday Mon 20 Mar 2028
Maundy Thursday Thu 13 Apr 2028
Good Friday Fri 14 Apr 2028
Labour Day Mon 1 May 2028
Independence Day Sat 16 Sep 2028
Revolution Day Mon 20 Nov 2028
Christmas Day Mon 25 Dec 2028
New Year's Day Mon 1 Jan 2029
Constitution Day Mon 5 Feb 2029
Benito Juárez's Birthday Mon 19 Mar 2029
Maundy Thursday Thu 29 Mar 2029
Good Friday Fri 30 Mar 2029
Labour Day Tue 1 May 2029
Independence Day Sun 16 Sep 2029
Revolution Day Mon 19 Nov 2029
Christmas Day Tue 25 Dec 2029
New Year's Day Tue 1 Jan 2030
Constitution Day Mon 4 Feb 2030
Benito Juárez's Birthday Mon 18 Mar 2030
Maundy Thursday Thu 18 Apr 2030
Good Friday Fri 19 Apr 2030
Labour Day Wed 1 May 2030
Independence Day Mon 16 Sep 2030
Revolution Day Mon 18 Nov 2030
Christmas Day Wed 25 Dec 2030
New Year's Day Wed 1 Jan 2031
Constitution Day Mon 3 Feb 2031
Benito Juárez's Birthday Mon 17 Mar 2031
Maundy Thursday Thu 10 Apr 2031
Good Friday Fri 11 Apr 2031
Labour Day Thu 1 May 2031
Independence Day Tue 16 Sep 2031
Revolution Day Mon 17 Nov 2031
Christmas Day Thu 25 Dec 2031
New Year's Day Thu 1 Jan 2032
Constitution Day Mon 2 Feb 2032
Benito Juárez's Birthday Mon 15 Mar 2032
Maundy Thursday Thu 25 Mar 2032
Good Friday Fri 26 Mar 2032
Labour Day Sat 1 May 2032
Independence Day Thu 16 Sep 2032
Revolution Day Mon 15 Nov 2032
Christmas Day Sat 25 Dec 2032
New Year's Day Sat 1 Jan 2033
Constitution Day Mon 7 Feb 2033
Benito Juárez's Birthday Mon 21 Mar 2033
Maundy Thursday Thu 14 Apr 2033
Good Friday Fri 15 Apr 2033
Labour Day Sun 1 May 2033
Independence Day Fri 16 Sep 2033
Revolution Day Mon 21 Nov 2033
Christmas Day Sun 25 Dec 2033
New Year's Day Sun 1 Jan 2034
Constitution Day Mon 6 Feb 2034
Benito Juárez's Birthday Mon 20 Mar 2034
Maundy Thursday Thu 6 Apr 2034
Good Friday Fri 7 Apr 2034
Labour Day Mon 1 May 2034
Independence Day Sat 16 Sep 2034
Revolution Day Mon 20 Nov 2034
Christmas Day Mon 25 Dec 2034
New Year's Day Mon 1 Jan 2035
Constitution Day Mon 5 Feb 2035
Benito Juárez's Birthday Mon 19 Mar 2035
Maundy Thursday Thu 22 Mar 2035
Good Friday Fri 23 Mar 2035
Labour Day Tue 1 May 2035
Independence Day Sun 16 Sep 2035
Revolution Day Mon 19 Nov 2035
Christmas Day Tue 25 Dec 2035
New Year's Day Tue 1 Jan 2036
Constitution Day Mon 4 Feb 2036
Benito Juárez's Birthday Mon 17 Mar 2036
Maundy Thursday Thu 10 Apr 2036
Good Friday Fri 11 Apr 2036
Labour Day Thu 1 May 2036
Independence Day Tue 16 Sep 2036
Revolution Day Mon 17 Nov 2036
Christmas Day Thu 25 Dec 2036
New Year's Day Thu 1 Jan 2037
Constitution Day Mon 2 Feb 2037
Benito Juárez's Birthday Mon 16 Mar 2037
Maundy Thursday Thu 2 Apr 2037
Good Friday Fri 3 Apr 2037
Labour Day Fri 1 May 2037
Independence Day Wed 16 Sep 2037
Revolution Day Mon 16 Nov 2037
Christmas Day Fri 25 Dec 2037
New Year's Day Fri 1 Jan 2038
Constitution Day Mon 1 Feb 2038
Benito Juárez's Birthday Mon 15 Mar 2038
Maundy Thursday Thu 22 Apr 2038
Good Friday Fri 23 Apr 2038
Labour Day Sat 1 May 2038
Independence Day Thu 16 Sep 2038
Revolution Day Mon 15 Nov 2038
Christmas Day Sat 25 Dec 2038
New Year's Day Sat 1 Jan 2039
Constitution Day Mon 7 Feb 2039
Benito Juárez's Birthday Mon 21 Mar 2039
Maundy Thursday Thu 7 Apr 2039
Good Friday Fri 8 Apr 2039
Labour Day Sun 1 May 2039
Independence Day Fri 16 Sep 2039
Revolution Day Mon 21 Nov 2039
Christmas Day Sun 25 Dec 2039
New Year's Day Sun 1 Jan 2040
Constitution Day Mon 6 Feb 2040
Benito Juárez's Birthday Mon 19 Mar 2040
Maundy Thursday Thu 29 Mar 2040
Good Friday Fri 30 Mar 2040
Labour Day Tue 1 May 2040
Independence Day Sun 16 Sep 2040
Revolution Day Mon 19 Nov 2040
Christmas Day Tue 25 Dec 2040
New Year's Day Tue 1 Jan 2041
Constitution Day Mon 4 Feb 2041
Benito Juárez's Birthday Mon 18 Mar 2041
Maundy Thursday Thu 18 Apr 2041
Good Friday Fri 19 Apr 2041
Labour Day Wed 1 May 2041
Independence Day Mon 16 Sep 2041
Revolution Day Mon 18 Nov 2041
Christmas Day Wed 25 Dec 2041
New Year's Day Wed 1 Jan 2042
Constitution Day Mon 3 Feb 2042
Benito Juárez's Birthday Mon 17 Mar 2042
Maundy Thursday Thu 3 Apr 2042
Good Friday Fri 4 Apr 2042
Labour Day Thu 1 May 2042
Independence Day Tue 16 Sep 2042
Revolution Day Mon 17 Nov 2042
Christmas Day Thu 25 Dec 2042
New Year's Day Thu 1 Jan 2043
Constitution Day Mon 2 Feb 2043
Benito Juárez's Birthday Mon 16 Mar 2043
Maundy Thursday Thu 26 Mar 2043
Good Friday Fri 27 Mar 2043
Labour Day Fri 1 May 2043
Independence Day Wed 16 Sep 2043
Revolution Day Mon 16 Nov 2043
Christmas Day Fri 25 Dec 2043
New Year's Day Fri 1 Jan 2044
Constitution Day Mon 1 Feb 2044
Benito Juárez's Birthday Mon 21 Mar 2044
Maundy Thursday Thu 14 Apr 2044
Good Friday Fri 15 Apr 2044
Labour Day Sun 1 May 2044
Independence Day Fri 16 Sep 2044
Revolution Day Mon 21 Nov 2044
Christmas Day Sun 25 Dec 2044
New Year's Day Sun 1 Jan 2045
Constitution Day Mon 6 Feb 2045
Benito Juárez's Birthday Mon 20 Mar 2045
Maundy Thursday Thu 6 Apr 2045
Good Friday Fri 7 Apr 2045
Labour Day Mon 1 May 2045
Independence Day Sat 16 Sep 2045
Revolution Day Mon 20 Nov 2045
Christmas Day Mon 25 Dec 2045
New Year's Day Mon 1 Jan 2046
Constitution Day Mon 5 Feb 2046
Benito Juárez's Birthday Mon 19 Mar 2046
Maundy Thursday Thu 22 Mar 2046
Good Friday Fri 23 Mar 2046
Labour Day Tue 1 May 2046
Independence Day Sun 16 Sep 2046
Revolution Day Mon 19 Nov 2046
Christmas Day Tue 25 Dec 2046
New Year's Day Tue 1 Jan 2047
Constitution Day Mon 4 Feb 2047
Benito Juárez's Birthday Mon 18 Mar 2047
Maundy Thursday Thu 11 Apr 2047
Good Friday Fri 12 Apr 2047
Labour Day Wed 1 May 2047
Independence Day Mon 16 Sep 2047
Revolution Day Mon 18 Nov 2047
Christmas Day Wed 25 Dec 2047
New Year's Day Wed 1 Jan 2048
Constitution Day Mon 3 Feb 2048
Benito Juárez's Birthday Mon 16 Mar 2048
Maundy Thursday Thu 2 Apr 2048
Good Friday Fri 3 Apr 2048
Labour Day Fri 1 May 2048
Independence Day Wed 16 Sep 2048
Revolution Day Mon 16 Nov 2048
Christmas Day Fri 25 Dec 2048
New Year's Day Fri 1 Jan 2049
Constitution Day Mon 1 Feb 2049
Benito Juárez's Birthday Mon 15 Mar 2049
Maundy Thursday Thu 15 Apr 2049
Good Friday Fri 16 Apr 2049
Labour Day Sat 1 May 2049
Independence Day Thu 16 Sep 2049
Revolution Day Mon 15 Nov 2049
Christmas Day Sat 25 Dec 2049
New Year's Day Sat 1 Jan 2050
Constitution Day Mon 7 Feb 2050
Benito Juárez's Birthday Mon 21 Mar 2050
Maundy Thursday Thu 7 Apr 2050
Good Friday Fri 8 Apr 2050
Labour Day Sun 1 May 2050
Independence Day Fri 16 Sep 2050
Revolution Day Mon 21 Nov 2050
Christmas Day Sun 25 Dec 2050
New Year's Day Sun 1 Jan 2051
Constitution Day Mon 6 Feb 2051
Benito Juárez's Birthday Mon 20 Mar 2051
Maundy Thursday Thu 30 Mar 2051
Good Friday Fri 31 Mar 2051
Labour Day Mon 1 May 2051
Independence Day Sat 16 Sep 2051
Revolution Day Mon 20 Nov 2051
Christmas Day Mon 25 Dec 2051
New Year's Day Mon 1 Jan 2052
Constitution Day Mon 5 Feb 2052
Benito Juárez's Birthday Mon 18 Mar 2052
Maundy Thursday Thu 18 Apr 2052
Good Friday Fri 19 Apr 2052
Labour Day Wed 1 May 2052
Independence Day Mon 16 Sep 2052
Revolution Day Mon 18 Nov 2052
Christmas Day Wed 25 Dec 2052
New Year's Day Wed 1 Jan 2053
Constitution Day Mon 3 Feb 2053
Benito Juárez's Birthday Mon 17 Mar 2053
Maundy Thursday Thu 3 Apr 2053
Good Friday Fri 4 Apr 2053
Labour Day Thu 1 May 2053
Independence Day Tue 16 Sep 2053
Revolution Day Mon 17 Nov 2053
Christmas Day Thu 25 Dec 2053
New Year's Day Thu 1 Jan 2054
Constitution Day Mon 2 Feb 2054
Benito Juárez's Birthday Mon 16 Mar 2054
Maundy Thursday Thu 26 Mar 2054
Good Friday Fri 27 Mar 2054
Labour Day Fri 1 May 2054
Independence Day Wed 16 Sep 2054
Revolution Day Mon 16 Nov 2054
Christmas Day Fri 25 Dec 2054
New Year's Day Fri 1 Jan 2055
Constitution Day Mon 1 Feb 2055
Benito Juárez's Birthday Mon 15 Mar 2055
Maundy Thursday Thu 15 Apr 2055
Good Friday Fri 16 Apr 2055
Labour Day Sat 1 May 2055
Independence Day Thu 16 Sep 2055
Revolution Day Mon 15 Nov 2055
Christmas Day Sat 25 Dec 2055
New Year's Day Sat 1 Jan 2056
Constitution Day Mon 7 Feb 2056
Benito Juárez's Birthday Mon 20 Mar 2056
Maundy Thursday Thu 30 Mar 2056
Good Friday Fri 31 Mar 2056
Labour Day Mon 1 May 2056
Independence Day Sat 16 Sep 2056
Revolution Day Mon 20 Nov 2056
Christmas Day Mon 25 Dec 2056
New Year's Day Mon 1 Jan 2057
Constitution Day Mon 5 Feb 2057
Benito Juárez's Birthday Mon 19 Mar 2057
Maundy Thursday Thu 19 Apr 2057
Good Friday Fri 20 Apr 2057
Labour Day Tue 1 May 2057
Independence Day Sun 16 Sep 2057
Revolution Day Mon 19 Nov 2057
Christmas Day Tue 25 Dec 2057
New Year's Day Tue 1 Jan 2058
Constitution Day Mon 4 Feb 2058
Benito Juárez's Birthday Mon 18 Mar 2058
Maundy Thursday Thu 11 Apr 2058
Good Friday Fri 12 Apr 2058
Labour Day Wed 1 May 2058
Independence Day Mon 16 Sep 2058
Revolution Day Mon 18 Nov 2058
Christmas Day Wed 25 Dec 2058
New Year's Day Wed 1 Jan 2059
Constitution Day Mon 3 Feb 2059
Benito Juárez's Birthday Mon 17 Mar 2059
Maundy Thursday Thu 27 Mar 2059
Good Friday Fri 28 Mar 2059
Labour Day Thu 1 May 2059
Independence Day Tue 16 Sep 2059
Revolution Day Mon 17 Nov 2059
Christmas Day Thu 25 Dec 2059
New Year's Day Thu 1 Jan 2060
Constitution Day Mon 2 Feb 2060
Benito Juárez's Birthday Mon 15 Mar 2060
Maundy Thursday Thu 15 Apr 2060
Good Friday Fri 16 Apr 2060
Labour Day Sat 1 May 2060
Independence Day Thu 16 Sep 2060
Revolution Day Mon 15 Nov 2060
Christmas Day Sat 25 Dec 2060
New Year's Day Sat 1 Jan 2061
Constitution Day Mon 7 Feb 2061
Benito Juárez's Birthday Mon 21 Mar 2061
Maundy Thursday Thu 7 Apr 2061
Good Friday Fri 8 Apr 2061
Labour Day Sun 1 May 2061
Independence Day Fri 16 Sep 2061
Revolution Day Mon 21 Nov 2061
Christmas Day Sun 25 Dec 2061
New Year's Day Sun 1 Jan 2062
Constitution Day Mon 6 Feb 2062
Benito Juárez's Birthday Mon 20 Mar 2062
Maundy Thursday Thu 23 Mar 2062
Good Friday Fri 24 Mar 2062
Labour Day Mon 1 May 2062
Independence Day Sat 16 Sep 2062
Revolution Day Mon 20 Nov 2062
Christmas Day Mon 25 Dec 2062
New Year's Day Mon 1 Jan 2063
Constitution Day Mon 5 Feb 2063
Benito Juárez's Birthday Mon 19 Mar 2063
Maundy Thursday Thu 12 Apr 2063
Good Friday Fri 13 Apr 2063
Labour Day Tue 1 May 2063
Independence Day Sun 16 Sep 2063
Revolution Day Mon 19 Nov 2063
Christmas Day Tue 25 Dec 2063
New Year's Day Tue 1 Jan 2064
Constitution Day Mon 4 Feb 2064
Benito Juárez's Birthday Mon 17 Mar 2064
Maundy Thursday Thu 3 Apr 2064
Good Friday Fri 4 Apr 2064
Labour Day Thu 1 May 2064
Independence Day Tue 16 Sep 2064
Revolution Day Mon 17 Nov 2064
Christmas Day Thu 25 Dec 2064
New Year's Day Thu 1 Jan 2065
Constitution Day Mon 2 Feb 2065
Benito Juárez's Birthday Mon 16 Mar 2065
Maundy Thursday Thu 26 Mar 2065
Good Friday Fri 27 Mar 2065
Labour Day Fri 1 May 2065
Independence Day Wed 16 Sep 2065
Revolution Day Mon 16 Nov 2065
Christmas Day Fri 25 Dec 2065
New Year's Day Fri 1 Jan 2066
Constitution Day Mon 1 Feb 2066
Benito Juárez's Birthday Mon 15 Mar 2066
Maundy Thursday Thu 8 Apr 2066
Good Friday Fri 9 Apr 2066
Labour Day Sat 1 May 2066
Independence Day Thu 16 Sep 2066
Revolution Day Mon 15 Nov 2066
Christmas Day Sat 25 Dec 2066
New Year's Day Sat 1 Jan 2067
Constitution Day Mon 7 Feb 2067
Benito Juárez's Birthday Mon 21 Mar 2067
Maundy Thursday Thu 31 Mar 2067
Good Friday Fri 1 Apr 2067
Labour Day Sun 1 May 2067
Independence Day Fri 16 Sep 2067
Revolution Day Mon 21 Nov 2067
Christmas Day Sun 25 Dec 2067
New Year's Day Sun 1 Jan 2068
Constitution Day Mon 6 Feb 2068
Benito Juárez's Birthday Mon 19 Mar 2068
Maundy Thursday Thu 19 Apr 2068
Good Friday Fri 20 Apr 2068
Labour Day Tue 1 May 2068
Independence Day Sun 16 Sep 2068
Revolution Day Mon 19 Nov 2068
Christmas Day Tue 25 Dec 2068
New Year's Day Tue 1 Jan 2069
Constitution Day Mon 4 Feb 2069
Benito Juárez's Birthday Mon 18 Mar 2069
Maundy Thursday Thu 11 Apr 2069
Good Friday Fri 12 Apr 2069
Labour Day Wed 1 May 2069
Independence Day Mon 16 Sep 2069
Revolution Day Mon 18 Nov 2069
Christmas Day Wed 25 Dec 2069
New Year's Day Wed 1 Jan 2070
Constitution Day Mon 3 Feb 2070
Benito Juárez's Birthday Mon 17 Mar 2070
Maundy Thursday Thu 27 Mar 2070
Good Friday Fri 28 Mar 2070
Labour Day Thu 1 May 2070
Independence Day Tue 16 Sep 2070
Revolution Day Mon 17 Nov 2070
Christmas Day Thu 25 Dec 2070
New Year's Day Thu 1 Jan 2071
Constitution Day Mon 2 Feb 2071
Benito Juárez's Birthday Mon 16 Mar 2071
Maundy Thursday Thu 16 Apr 2071
Good Friday Fri 17 Apr 2071
Labour Day Fri 1 May 2071
Independence Day Wed 16 Sep 2071
Revolution Day Mon 16 Nov 2071
Christmas Day Fri 25 Dec 2071
New Year's Day Fri 1 Jan 2072
Constitution Day Mon 1 Feb 2072
Benito Juárez's Birthday Mon 21 Mar 2072
Maundy Thursday Thu 7 Apr 2072
Good Friday Fri 8 Apr 2072
Labour Day Sun 1 May 2072
Independence Day Fri 16 Sep 2072
Revolution Day Mon 21 Nov 2072
Christmas Day Sun 25 Dec 2072
New Year's Day Sun 1 Jan 2073
Constitution Day Mon 6 Feb 2073
Benito Juárez's Birthday Mon 20 Mar 2073
Maundy Thursday Thu 23 Mar 2073
Good Friday Fri 24 Mar 2073
Labour Day Mon 1 May 2073
Independence Day Sat 16 Sep 2073
Revolution Day Mon 20 Nov 2073
Christmas Day Mon 25 Dec 2073
New Year's Day Mon 1 Jan 2074
Constitution Day Mon 5 Feb 2074
Benito Juárez's Birthday Mon 19 Mar 2074
Maundy Thursday Thu 12 Apr 2074
Good Friday Fri 13 Apr 2074
Labour Day Tue 1 May 2074
Independence Day Sun 16 Sep 2074
Revolution Day Mon 19 Nov 2074
Christmas Day Tue 25 Dec 2074
New Year's Day Tue 1 Jan 2075
Constitution Day Mon 4 Feb 2075
Benito Juárez's Birthday Mon 18 Mar 2075
Maundy Thursday Thu 4 Apr 2075
Good Friday Fri 5 Apr 2075
Labour Day Wed 1 May 2075
Independence Day Mon 16 Sep 2075
Revolution Day Mon 18 Nov 2075
Christmas Day Wed 25 Dec 2075
New Year's Day Wed 1 Jan 2076
Constitution Day Mon 3 Feb 2076
Benito Juárez's Birthday Mon 16 Mar 2076
Maundy Thursday Thu 16 Apr 2076
Good Friday Fri 17 Apr 2076
Labour Day Fri 1 May 2076
Independence Day Wed 16 Sep 2076
Revolution Day Mon 16 Nov 2076
Christmas Day Fri 25 Dec 2076
New Year's Day Fri 1 Jan 2077
Constitution Day Mon 1 Feb 2077
Benito Juárez's Birthday Mon 15 Mar 2077
Maundy Thursday Thu 8 Apr 2077
Good Friday Fri 9 Apr 2077
Labour Day Sat 1 May 2077
Independence Day Thu 16 Sep 2077
Revolution Day Mon 15 Nov 2077
Christmas Day Sat 25 Dec 2077
New Year's Day Sat 1 Jan 2078
Constitution Day Mon 7 Feb 2078
Benito Juárez's Birthday Mon 21 Mar 2078
Maundy Thursday Thu 31 Mar 2078
Good Friday Fri 1 Apr 2078
Labour Day Sun 1 May 2078
Independence Day Fri 16 Sep 2078
Revolution Day Mon 21 Nov 2078
Christmas Day Sun 25 Dec 2078
New Year's Day Sun 1 Jan 2079
Constitution Day Mon 6 Feb 2079
Benito Juárez's Birthday Mon 20 Mar 2079
Maundy Thursday Thu 20 Apr 2079
Good Friday Fri 21 Apr 2079
Labour Day Mon 1 May 2079
Independence Day Sat 16 Sep 2079
Revolution Day Mon 20 Nov 2079
Christmas Day Mon 25 Dec 2079
New Year's Day Mon 1 Jan 2080
Constitution Day Mon 5 Feb 2080
Benito Juárez's Birthday Mon 18 Mar 2080
Maundy Thursday Thu 4 Apr 2080
Good Friday Fri 5 Apr 2080
Labour Day Wed 1 May 2080
Independence Day Mon 16 Sep 2080
Revolution Day Mon 18 Nov 2080
Christmas Day Wed 25 Dec 2080
New Year's Day Wed 1 Jan 2081
Constitution Day Mon 3 Feb 2081
Benito Juárez's Birthday Mon 17 Mar 2081
Maundy Thursday Thu 27 Mar 2081
Good Friday Fri 28 Mar 2081
Labour Day Thu 1 May 2081
Independence Day Tue 16 Sep 2081
Revolution Day Mon 17 Nov 2081
Christmas Day Thu 25 Dec 2081
New Year's Day Thu 1 Jan 2082
Constitution Day Mon 2 Feb 2082
Benito Juárez's Birthday Mon 16 Mar 2082
Maundy Thursday Thu 16 Apr 2082
Good Friday Fri 17 Apr 2082
Labour Day Fri 1 May 2082
Independence Day Wed 16 Sep 2082
Revolution Day Mon 16 Nov 2082
Christmas Day Fri 25 Dec 2082
New Year's Day Fri 1 Jan 2083
Constitution Day Mon 1 Feb 2083
Benito Juárez's Birthday Mon 15 Mar 2083
Maundy Thursday Thu 1 Apr 2083
Good Friday Fri 2 Apr 2083
Labour Day Sat 1 May 2083
Independence Day Thu 16 Sep 2083
Revolution Day Mon 15 Nov 2083
Christmas Day Sat 25 Dec 2083
New Year's Day Sat 1 Jan 2084

Preguntas frecuentes

What counts as a business day?

In CivicCalendar a business day is a Monday–Friday that is not a legal holiday in México. 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.