Conditional Formatting is how I would do this.
1. Select the date list, and click Conditional Formatting > New Rule under Home tab.
2. In the New Formatting Rule dialog box, you need to:A. In the Select a Rule Type section, select Format only cells that contain.
B. Select Cell Value in the first Format only cells with drop-down list.
C. Select greater than in the second Format only cells with drop-down list.
D. In the third Format only cells with drop-down list, enter =TODAY().
E. Click the Format button.
3. In the Format Cells dialog box, specify a background color for highlighting the later dates, and then click the OK button.
4. When it returns to the New Formatting Rule dialog box, click OK.
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