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This example shows you the functions that can be used to calculate the number of days between two input dates:

• `DATEDIF` - Calculates difference between two input dates for a specified unit of measure. In this example, the unit of measure is day. See DATEDIF Function.
• `NETWORKDAYS` - Calculates number of working days between two input dates, assuming a Monday - Friday workweek. See NETWORKDAYS Function.
• `NETWORKDAYSINTL` - Calculates number of working days between two input dates with optional specified workweek. see NETWORKDAYSINTL Function.
• `WORKDAY` - Calculates the date of a working day that is a specified number of working days before or after a specified date. See WORKDAY Function.
• `WORKDAYINTL` - Calculates the date of a working day that is a specified number of working days before or after a specified date, factoring in an optional set of workday schedule for the week. See WORKDAYINTL Function.

Source:

The following dataset contains two columns of dates.

• The first column values are constant. This date falls on a Monday.
Date1Date2
2020-03-092020-03-13
2020-03-092020-03-06
2020-03-092020-03-16
2020-03-092020-03-23
2020-03-092020-04-10
2020-03-092021-03-10

Transformation:

The first transformation calculates the number of raw days between the two dates:

Transformation Name `New formula` `Single row formula` `datedif(Date1, Date2, day)` `'datedif'`

This step computes the number of working days between the two dates. Assumptions:

• Workweek is Monday - Friday.
• There are no holidays.

Transformation Name `New formula` `Single row formula` `networkdays(Date1, Date2, [])` `'networkDays'`

For some, March 17 is an important date, especially if you are Irish. To add St. Patrick's Day to the list of holidays, you could add the following transformation:

Transformation Name `New formula` `Single row formula` `networkdays(Date1, Date2, ['2020-03-17'])` `'networkDaysStPatricks'`

In the following transformation, the NETWORKDAYSINTL function is applied so that you can specify the working days in the week:

Transformation Name `New formula` `Single row formula` `networkdaysintl(Date1, Date2, '1000011', [])` `'networkDaysIntl'`

The following two functions enable you to calculate a specific working date based on an input date and integer number of days before or after it. In the following, the date that is five working days before the `Date2` column is computed:

Transformation Name `New formula` `Single row formula` `workday(Date2, -5)` `'workday'`

Suppose you wish to factor in a four-day workweek, in which Friday through Sunday is considered the weekend:

Transformation Name `New formula` `Single row formula` `workdayintl(Date2, -5,'0000111')` `'workdayintl'`

Results:

Date1Date2workdayintlworkdaynetworkDaysIntlnetworkDaysStPatricksnetworkDaysdatedif
2020-03-092020-03-132020-03-052020-03-064554
2020-03-092020-03-062020-02-272020-02-28nullnullnull-3
2020-03-092020-03-162020-03-152020-03-094667
2020-03-092020-03-232020-03-122020-03-168101114
2020-03-092020-04-102020-04-022020-04-0320242532
2020-03-092021-03-102021-03-022021-03-03210262263366

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