I registered round #822 yesterday but didn't notice that it starts 2.5 hours before the usual time. Wonder what will be the impact to ranking, and why the unusual start time.

Suggestion to codeforces is to highlight contest with unusual start time to make it more obvious and harder to miss.

Updated: If I have a wish for the CONTESTS page, is to highlight the start time of the upcoming periodical contest that does not start at the usual 07:35.