Which statements published in the patent application are correct?

The date of publication of the patent application, also known as the date of publication, refers to the date when the patent department, after receiving the application for a patent for invention, considers that it conforms to the provisions of the patent law after preliminary examination, and will publish it after 18 months from the date of application. Can be announced as soon as possible at the request of the applicant. Public days are for invention patents, but there are no public days for utility models and designs. The date of authorization announcement refers to the date when the patent department makes a decision to grant a patent right, issues a patent certificate and registers the announcement at the same time. The patent right shall take effect as of the date of announcement.