date

V::date(string $value, string $operator = null, string $test = null): bool

if(V::date('2012-12-12')) {
  echo 'Yay, valid!';
}

fields:
  example:
    label: Example field
    type: text
    validate: date

if(V::date('2012-12-12', '>=', '2010-10-10')) {
  echo 'Yay, passed!';
}

fields:
  example:
    label: Example field
    type: text
    validate:
      date:
        - ">="
        - 2010-10-10