I've created a set of match calendars for World Cup 2018 in Russia, with all-match, knockout stage-only, group-specific, and country-specific flavors available. Within the calendars, each match contains team, group, and venue information, plus a link to the FIFA match page. Completed matches also include final score and goal information. All calendars are updated nightly with match results and knockout stage teams, once they're known.
To subscribe, click one of the links below or right-click, choose Copy Link, and paste into your web, desktop, or mobile calendar application of choice. Enjoy, and be sure to share with your friends!