Signing date customization

Is there any way to customize a signing date to comply to a specific date format? I.E. something like dd/mmm/yyyy? Would there be a difference if the date is injected with [Signer1.Fullname1.label1.Date] as a pdf form field or if the field is added as an approval?

{
        binding: '{approval.signed}',
        subtype: 'LABEL',
        page: 1,
        top: 100,
        left: 100,
        height: 36,
        width: 200,
        type: 'INPUT',
        value: 'dd/mmm/yyyy',
      }

If i create an approval with these fields compared to a value of 'yyyy-MM-dd HH:mm:ss z'(as seen in the docs) the only difference is the timezone label is changed from UTC to GMT