Use AutoFill
Instead of entering data manually on a worksheet, use the AutoFill feature to fill cells with data that follows a pattern or that is based on data in other cells.

AutoFill Month and Date
-
Click the cell
-
Click and drag Fill Handle
AutoFill incremented/decremented list of number
-
Hold CTRL key
-
Click and drag Fill Handle
Customize series
-
Select multi-cells
-
Click and drag Fill Handle
Customize list
-
Go to File tab > click Options

-
In the Excel Options dialog box, do the following:
-
Click Advanced
-
Go to General section > click Edit Custom Lists button

- In the Custom Lists dialog box, do the following:
-
Enter the new custom list
-
Click Add

