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 know that Date is a Workday*

**General Formula**

**=WORKDAY(date-1,1,holidays)=date**

**“Date” is the first date in the column and “holidays” is the range of cells with holiday dates.**

**Formula**

**=WORKDAY(B5-1,1,$E$10:$E$11)=B5**

**Setting up the Data**

- We will set up data by inputting our
**Dates**in**Column B** - Our result will be returned by the
**WORKDAY function**in**Column C** **Holiday dates**are in**Cell E10**and**Cell E11**

* Figure 2: Setting up the Data*

**Date is a Workday**

- We will click on
**Cell C5** - We will insert the formula below into the cell

**=WORKDAY(B5-1,1,$E$10:$E$11)=B5** - We will
**press the enter key**

* Figure 3: Result of Date is a Workday for Cell C5*

- We will click on
**Cell C5**again - We will
**double click**on the fill handle tool which is the small plus sign you see at the bottom right of**Cell C5.**Select and drag down to copy the formula to other cells.

* Figure 4: Result of Using the WORKDAY Function*

**Explanation**

**=WORKDAY(B5-1,1,$E$10:$E$11)=B5**

This formula returns as** TRUE **for a** WORKDAY.**

For the start date, we use **date – 1** (B5-1), **1** for days, and **$E$10:$E$11 **for “holidays.”

The **WORKDAY function** goes back by a day and adds **1 day** to the result, taking into consideration **weekends **and **holidays**. With this, **WORKDAY **evaluates the **start_date.**

If the date falls on a weekend or holiday, the WEEKDAY function automatically adjusts the date to the next working day.

Lastly, a comparison is made between the original start_date to the result of the WORKDAY function. If the result of WORKDAY equals the start_date, the formula returns **TRUE**, and **FALSE** if otherwise.

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