Google shows dates within a search snippet when they think this may be useful to a searcher. Obviously, dates may have a big impact on clicking patterns: Based on the research by Ignite Visibility, about half of searchers claim that dates in search snippets are either “important” or “very important” clickthrough factors.
yahoo-domain, google-domain, ovh-domain, hetzner-domain, gkg-domain, rucenter-domain, cloudns-domain, subreg-domain, nameisp-domain, resellerclub-domain
Mini sitelinks are probably the most unpredictable element of a search snippet. Google may randomly pick links from navigation, tag, or category links, etc. There’s also no way to tell Google they made a poor choice.
Unlike sitelinks, which usually show up for the top-ranking result and mostly for branded searches, mini sitelinks can be generated for just about any result out there.