1. Select a column (any column)
2. from the toolbar, select Custom Format and date type
3. Then enter a date with the following format (mm / dd / yyyy) example: 07/17/2018 and when I press enter to go to another cell, the month has been modified to 1/17/2018, any month entered changes to 1 / dd / yyyy
2. from the toolbar, select Custom Format and date type
3. Then enter a date with the following format (mm / dd / yyyy) example: 07/17/2018 and when I press enter to go to another cell, the month has been modified to 1/17/2018, any month entered changes to 1 / dd / yyyy