How should I format my Date field Helper Text?

We are adding helper text to our date fields so the user knows whether to type month or day first.

The date field will be forgiving and smart. So it will allow users to type in dates in many different formats. They will be able to type:

  • Without using slashes (we may or may not put slashes in while they type, haven't decided yet)
  • 1 digit for month
  • 1 digit for day
  • 2 digits for year

Should helper text be displayed as the format that they could possibly type (only 2 digits for year - mm/dd/yy) OR how the entry will be formatted once the user finishes (mm/dd/yyyy)?

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