def METHOD_NAME(self, start_date: DateTime) -> List[Mapping[str, Any]]:
    """
    Returns a list of each day between the start date and now.
    The return value is a list of dicts {'date': date_string}.
    """
    dates = []
    while start_date < pendulum.now():
        dates.append({"date": start_date.to_date_string()})
        start_date = start_date.add(days=1)
    return dates