With the use of Excel’s conditional formatting, you can set the rules once and let Excel do the highlighting for you.

To fix this, first, clear the cell by selecting it and pressing Delete. Then, press Ctrl+1 to launch the Format Cells dialog box, and click "Date" in the Category list of the Number tab. There ...

Hide Cell Values If you want to hide a cell's contents while preserving its value, the best way is to use custom number formatting.