Making a cell blank whilst keeping the formula nad the conditional formating

[Matt Young]

Hi. This is my first question sorry in advance.

So I hae two clumns C and D, D is my expiry date column and C is my start date column. I have formated D to turn orage or red depending on the time left. I also have the formual =EDATE(C3,6). The problem s that because nothng is acctually entered in colmn C yet then all of colmn D is displaying 01/06/1900 in red. Is there a way to make D stay blank until a date is entered in C?

 

[Joe4]

Welcome to the Board!

Try using this formula instead:
=IF(C3>0,EDATE(C3,6),"")

 

[Matt Young]

You are a genious, I have spent 3 days trying different variations of ISBLANK, IF etc. Thank you

 

[Joe4]

You are welcome.

An important thing to remember about dates and time is that Excel stores them as numbers, specifically the number of days since 1/0/1900. Time is a fraction of one day.
You can see this if you enter any date, and change the format to "General".

Knowing this, that means that any valid date entered in is actually some number greater than 0. That is why we can use: IF(C3>0