## NETWORKDAYS Function

The NetworkDays function in Microsoft Excel is a useful tool for calculating the number of business days between two dates, excluding weekends and holidays. This function is commonly used in financial and project management applications, as it allows users to accurately track the amount of time it takes to complete a task or reach a certain milestone.

To use the NetworkDays function in Excel, you must first open the spreadsheet containing the dates you wish to calculate. Next, select the cell where you want the result to appear and type in the formula =NETWORKDAYS(start_date, end_date, [holidays]). The start_date and end_date parameters are required and represent the two dates you want to calculate the number of business days between. The [holidays] parameter is optional, and allows you to specify any additional holidays you want to exclude from the calculation.

For example, let’s say you want to calculate the number of business days between January 1st and January 15th, 2020. To do this, you would enter the formula =NETWORKDAYS(“01/01/2020”, “01/15/2020”) into the selected cell. This will return the result of 10, as there are 10 business days between these two dates.

The NetworkDays function can also be used to calculate the number of business days between two dates in different years. For example, if you want to calculate the number of business days between December 31st, 2019 and January 15th, 2020, you would enter the formula =NETWORKDAYS(“12/31/2019”, “01/15/2020”). This will return the result of 8, as there are 8 business days between these two dates.

In addition to excluding weekends from the calculation, the NetworkDays function also allows you to specify any additional holidays you want to exclude. To do this, you must provide a list of holidays as the [holidays] parameter. This list can be entered directly into the formula, or it can be provided as a reference to a range of cells containing the holiday dates.

For example, let’s say you want to calculate the number of business days between January 1st and January 15th, 2020, but you also want to exclude the holidays of New Year’s Day (January 1st) and Martin Luther King Jr. Day (January 20th). To do this, you would enter the formula =NETWORKDAYS(“01/01/2020”, “01/15/2020”, “01/01/2020”, “01/20/2020”). This will return the result of 8, as there are 8 business days between these two dates, excluding the holidays of New Year’s Day and Martin Luther King Jr. Day.

Alternatively, you can create a list of holidays in a separate range of cells and provide a reference to this range as the [holidays] parameter. For example, let’s say you have a list of holidays in cells A1 through A5, with each holiday listed as a date in the format “MM/DD/YYYY”. To calculate the number of business days between January 1st and January 15th, 2020, excluding these holidays, you would enter the formula =NETWORKDAYS(“01/01/2020”, “01/15/2020”, A1:A5).