** In Microsoft Excel, the NOW function is used to display the current date and time in a cell. It updates automatically whenever the worksheet is recalculated or opened. This function is useful for tracking when a particular entry was made or for creating timestamps.
Here's how to use the NOW function:
Click on the cell where you want the current date and time to appear.
Type the following formula:
=NOW()
Press Enter.
Excel will immediately display the current date and time in the cell. If you want to format the date and time differently, you can apply a custom number format to the cell. To do this, follow these steps:
Select the cell with the NOW function.
Go to the "Home" tab in the Excel ribbon.
In the "Number" group, click the drop-down arrow next to the Number Format box.
Choose "Custom" from the list.
In the "Type" field of the Format Cells dialog box, you can enter a custom date and time format. For example, to display the date and time like "mm/dd/yyyy hh:mm AM/PM", you can enter the following format:
mm/dd/yyyy hh:mm AM/PM
Click "OK" to apply the custom format.
The cell will now display the current date and time in the format you specified, and it will update automatically. Keep in mind that the NOW function is volatile, which means it will recalculate every time Excel recalculates formulas, which can have performance implications if used extensively in large worksheets. **
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