We can use the **WORKDAY** function to know if a day is a workday or not. This function calculates defined **“workdays”** dates in the **future** or **past**. It automatically excludes **weekend dates** and **(optionally), holidays**. The steps below will walk through the process.

*Figure 1: How to Use Excel WORKDAY Function*

**Syntax**

**=WORKDAY(start_date, days, [holidays])**

**Start_date:**The specified date to start from**Days:**These are working days before or after start_date.**Holidays:**[optional] A list of dates that should be considered non-work days.

**Formula**

**=WORKDAY(A4,B4,$A$10:$A$11)**

**Setting up the Data**

- We will set up data by inputting our
**Dates**in**Column A** **Column B**contains the days we want after the start date and before the start date. A negative value as in Cell B6 signifies that we want a day before the start date- Our result will be returned by the
**WORKDAY function**in**Column C** **Holiday dates**are in**Cell A10**and**Cell A11**

* Figure 2: Setting up the Data*

**Note: **

All dates in **Column A** have been formatted from **month/date/year** (e.g. 21/1/2019) to what is in figure 2. We can do this by selecting the range **(A4:A11) **where we will put the dates.

**We will right-click and click on format cells**- We will select the
**custom option**and input**ddd, mmm/d/yyyy**in the**“type”**section

* Figure 3: Formatting the Cells*

**We will press OK**

**Workday Function**

- We will click on
**Cell C4** - We will insert the formula below into the cell

**=WORKDAY(A4,B4,$A$10:$A$11)** - We will
**press the enter key**

* Figure 4: Result of Date is a Workday for Cell C4*

- We will click on
**Cell C4**again - We will
**double click**on the fill handle tool which is the small plus sign you see at the bottom right of**Cell C4.**Select and drag down to copy the formula to other cells.

* Figure 5: Result of Using the WORKDAY Function*

**Explanation**

**=WORKDAY(A4,B4,$A$10:$A$11)**

This formula returns as** WORKDAYS **in the past or future.

In **Cell C4**, the formula sees that the **start date **is a **Friday**. Because we have specified the days in the future as **1** in **Cell B4**, the next day ought to be **Saturday**. However, this function automatically **skips weekends** and the **next WORKDAY** is therefore, **MONDAY.**

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