def _make_times(delta_hours):
    """
    Creates the list of times that a map will be downloaded for each day starting a '00' UTC.

    :param delta_hours: The change in hours between subsequent maps
    :return: The list of times represented as list of strings

    >>> _make_times(6)
    ['00', '06', '12', '18']
    """
    return [f'{t:02d}' for t in range(0, 24, delta_hours)]