Excel has a "Conditional Formatting" feature that allows you to change the color of a cell or a range of cells based on the values or formulas within the cells. Here's how you can change the cell color based on the month of the date in a cell: br br 1) Select the cells that you want to apply the formatting to. br 2) Go to the "Home" tab, and in the "Styles" section, click on the "Conditional Formatting" dropdown and select "New Rule." br 3) In the "New Formatting Rule" dialog box, select "Use a formula to determine which cells to format." br 4) Enter the following formula into the "Format values where this formula is true" field: =MONTH($A1) = [Month Number] br 5) Replace "A1" with the cell reference that contains the date you want to format, and replace [Month Number] with the number of the month you want to format. For example, to format cells that contain dates in January, the formula would be =MONTH($A1) = 1. br 6) Click the "Format" button to select the desired cell color and then click "OK." br 7) Repeat steps 4-6 for each additional month you want to format. br 8) Click "OK" to apply the conditional formatting rule. br br Now, the cells with the dates of the specified month will automatically change color based on the conditional formatting rule you just created. br br In summary, do these steps for January. br 1) Select cells. br 2) Home -- Style -- Conditional Formatting br 3) New Rule br 4) "Format values where this formula is true" br 5) =MONTH($A1)=1 br 6) Format br 7) Select colour br 8) OK br 9) OK br br And do these steps for February. br 1) Select cells. br 2) Home -- Style -- Conditional Formatting br 3) Manage Rules br 4) New Rule br 5) "Format values where this formula is true" br 6) =MONTH($A1)=2 br 7) Format br 8) Select colour br 9) OK br 10) OK br br And repeat the above step for March to December. But ensure that the formual is change like shown below for each month like this.