This article will teach you how to change the date format in Microsoft Excel, allowing you to have a uniform format across your spreadsheet.
Unable to Change Date Format in Excel
Microsoft Excel offers its users various formats for writing dates, including DD/MM/YYYY, DD/MM/YY, MM/DD/YY. Unfortunately, if dates are formatted differently within a spreadsheet, the system does not always recognize when a cell contains a date. This oversight can easily lead to confusion when dates are formatted differently across a spreadsheet. Luckily, there is an easy way to format your spreadsheet so that each piece of data input into your spreadsheet reads the same.
Open your Excel spreadsheet and select the column containing the dates.
Go to Data and choose Text to Column . Choose delimited and then click on Next.
Uncheck all delimiters and click Next.
Finally, click on date and choose the format in which you'd like to read your dates (the default format is D/M/Y):