# WEEKDAY

In this comprehensive guide, we will explore everything you need to know about the WEEKDAY function in Excel. The WEEKDAY function is a powerful tool that allows you to determine the day of the week for a specific date. This can be incredibly useful for scheduling, project management, and data analysis tasks. By the end of this article, you will have a deep understanding of the WEEKDAY function, its syntax, examples, tips and tricks, common mistakes, and related formulae.

## WEEKDAY Syntax

The syntax for the WEEKDAY function in Excel is as follows:

=WEEKDAY(serial_number, [return_type])

There are two arguments in the WEEKDAY function:

1. serial_number (required): This is the date for which you want to find the day of the week. It can be entered as a date, a cell reference containing a date, or a formula that returns a date.
2. return_type (optional): This is a number that determines the type of return value you want. There are several return types available, ranging from 1 to 3 and 11 to 17. If you do not specify a return_type, Excel will use the default value of 1. The different return types are explained in detail later in this article.

## WEEKDAY Examples

Let’s explore some examples of how to use the WEEKDAY function in Excel:

1. Basic Example: To find the day of the week for the date “August 1, 2021”, you would use the following formula:
2. =WEEKDAY(“2021-08-01”)

This formula would return 1, which represents Sunday, using the default return_type of 1.

1. Using a Cell Reference: If you have a date in cell A1, you can use the WEEKDAY function to find the day of the week for that date:
2. =WEEKDAY(A1)

This formula will return the day of the week for the date in cell A1, using the default return_type of 1.

1. Using a Different Return Type: To find the day of the week for the date “August 1, 2021” using a return_type of 2 (where Monday is 1 and Sunday is 7), you would use the following formula:
2. =WEEKDAY(“2021-08-01”, 2)

This formula would return 7, which represents Sunday, using the return_type of 2.

## WEEKDAY Tips & Tricks

Here are some tips and tricks to help you get the most out of the WEEKDAY function in Excel:

1. Understanding Return Types: As mentioned earlier, there are several return types available in the WEEKDAY function. Here’s a quick overview of the most commonly used return types:
• 1 (default): Sunday is 1, Monday is 2, …, Saturday is 7
• 2: Monday is 1, Tuesday is 2, …, Sunday is 7
• 3: Monday is 0, Tuesday is 1, …, Sunday is 6

Choose the return type that best suits your needs and the context in which you are using the WEEKDAY function.

1. Combining with Other Functions: The WEEKDAY function can be combined with other functions to create more complex formulas. For example, you can use the WEEKDAY function with the IF function to display a custom message based on the day of the week:
2. =IF(WEEKDAY(A1) = 1, “It’s Sunday!”, “It’s not Sunday.”)

This formula will display “It’s Sunday!” if the date in cell A1 is a Sunday, and “It’s not Sunday.” if it’s any other day of the week.

## Common Mistakes When Using WEEKDAY

Here are some common mistakes to avoid when using the WEEKDAY function in Excel:

1. Incorrect Date Format: Make sure to enter the date in a format that Excel recognizes, such as “YYYY-MM-DD” or “MM/DD/YYYY”. If you enter the date in an incorrect format, the WEEKDAY function may return an error or an incorrect result.
2. Forgetting the Return Type: If you need a specific return type, make sure to include it in your formula. Otherwise, Excel will use the default return_type of 1, which may not give you the desired result.

## Why Isn’t My WEEKDAY Function Working?

If your WEEKDAY function isn’t working as expected, consider the following troubleshooting steps:

1. Check the Date Format: Ensure that the date is entered in a format that Excel recognizes. If the date is in an incorrect format, the WEEKDAY function may return an error or an incorrect result.
2. Verify the Return Type: Make sure you are using the correct return_type for your needs. If you are unsure, experiment with different return types to see which one gives you the desired result.
3. Inspect for Errors: If your formula contains an error, the WEEKDAY function may not work correctly. Double-check your formula for any errors, such as incorrect cell references or missing parentheses.

## WEEKDAY: Related Formulae

Here are some related formulae that you may find useful when working with the WEEKDAY function in Excel:

1. DATE: The DATE function allows you to create a date value based on the year, month, and day. This can be useful when combined with the WEEKDAY function to find the day of the week for a specific date.
2. TODAY: The TODAY function returns the current date. You can use this function with the WEEKDAY function to find the day of the week for today’s date.
3. NETWORKDAYS: The NETWORKDAYS function calculates the number of working days between two dates, excluding weekends and holidays. This can be helpful for project management and scheduling tasks.
4. WORKDAY: The WORKDAY function returns a date that is a specified number of working days away from a given date, excluding weekends and holidays. This can be useful for calculating deadlines and due dates.
5. TEXT: The TEXT function allows you to format a number or date as text, using a specified format. You can use this function with the WEEKDAY function to display the day of the week as a text value, such as “Monday” or “Tuesday”.

By now, you should have a thorough understanding of the WEEKDAY function in Excel, including its syntax, examples, tips and tricks, common mistakes, and related formulae. With this knowledge, you can confidently use the WEEKDAY function to determine the day of the week for any date and enhance your data analysis and scheduling capabilities in Excel.

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