Another solution would be to have the docs explicitly warm against it. Something like, "The ISO 8601 week-based year (see NOTES) with century as a decimal numb

Another solution would be to have the docs explicitly warm against it. Something like, "The ISO 8601 week-based year (see NOTES) with century as a decimal number. Warning: most people want %Y rather than %G; do not use unless you want week-based years. ..."