# Workday Formula Error Messages

#### nhbartos

##### Board Regular
Hi folks...

I am using the following formula to perform a basic calculation, but I am getting a formula error message.

=workday(D7,D11,'0 DO NOT EDIT 2'!A3:A97)

D7 remains blank until needed.
I have this same calculation on 100 different client data tabs, and each has this error.
I only use it one to begin my timeline. Once that is complete, it is wiped and I start again.

Error messages:

There is a problem with a number used in this formula.
The next evaluation will result in an error.

I am thinking the error is only because it D7 is empty, correct?

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Does any of your references contain any text and text versions of dates or numbers? This would result in a #VALUE! output.

Hi

WORKDAY(start_date, days, [holidays])

The WORKDAY function syntax has the following arguments:

Start_date Required. A date that represents the start date.

Days Required. The number of nonweekend and nonholiday days before or after start_date. A positive value for days yields a future date; a negative value yields a past date.

Holidays Optional. An optional list of one or more dates to exclude from the working calendar, such as state and federal holidays and floating holidays. The list can be either a range of cells that contain the dates or an array constant of the serial numbers that represent the dates.

Important Dates should be entered by using the DATE function, or as results of other formulas or functions. For example, use DATE(2008,5,23) for the 23rd day of May, 2008. Problems can occur if dates are entered as text.

Remarks

Microsoft Excel stores dates as sequential serial numbers so they can be used in calculations. By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900.

If any argument is not a valid date, WORKDAY returns the #VALUE! error value.

If start_date plus days yields an invalid date, WORKDAY returns the #NUM! error value.

If days is not an integer, it is truncated.

hth

Hi...
No, not text. Just standard date format.

That answers it. Thanks. All set.

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