Open Microsoft Excel
Create a new blank workbook
Set up the month and year you want to display
Enter the days of the week in a row
Enter the dates for the month in the correct cells
Adjust column widths and row heights
Format the header with bold text and fill color
Add borders to the calendar grid
Center-align the text in each cell
Use formulas to auto-fill dates if needed
Copy the calendar layout for other months
Save the workbook
Print or share the calendar as needed