header

The element for introductory content — at the page level, the masthead with the logo, site name and primary navigation, which is the banner landmark; inside an <article> or <section>, that piece’s own heading group, byline and date, which is not a landmark at all

One element, two jobs, told apart by where it sits. The page banner should be one per page and hold what repeats on every page; an article’s header holds the <h1>, the date and the author line, which is how the feed page’s entries and the resource page’s title block are marked up. A <header> is not a heading — the heading is the <h1> inside it — and it does not need to be at the top of anything, only at the start of the thing it introduces.