Excel Formula to highlight cell based on time difference

Question

I want to highlight a cell if that cell and another cell its within 1.5 hours. So if A1 is 5/9/2016 06:55 and A4 is 5/9/2016 08:10 , they are within 1.5 hours apart, so highlight A4.

Answer 1

Looking at this answer and this Office page , you want to set a formula like:

1. Select cell A4 and click the Conditional Formatting button in the ribbon and choose "New Rule"

2. Select "Use a formula to determine which cells to format"

3. Enter the formula =IF(ABS(A4-A1)*24 < 1.5, TRUE, FALSE)

4. If you want cell A1 to be a fixed reference so that copy-paste will work, you can instead enter the formula =IF(ABS(A4-$A$1)*24 < 1.5, TRUE, FALSE) , or name the cell

5. Set the format to highlight the cell