Your XML sitemap file must be UTF-8 encoded to ensure web crawlers can process URLs with non-ASCII characters and special symbols. Sitemap generators use the UTF-8 character encoding by default.

Illyes states: “You can have just one site map, a traditional web sitemap as defined by sitemaps.org, and then add the news extension to the URLs that need it.

Google: Sitemap Dates vs Web Page Dates Apr 25, 2019 - 8:26 am 2 — by Barry Schwartz Filed Under Google Search Engine Optimization ...

As part of the Dal.ca Web Renewal Project (login required), we’ve partnered with digital agency, Domain7, to conduct a study to learn more about your unique experience with an updated sitemap approach ...