Creating date and time formats

You can edit date and time formats just like number formats. When you enter a date into a number cell, it is formatted according to the date style defined in the Base style, but you can apply a different format to it by applying a different style to the cell.

Saving a date format as part of a style

You can save date formats in exactly the same way as number formats. Define a number format within a style, or create a new style specially for the time or date format you want to apply to certain cells in your worksheet.