The weekly cycle of the Prize Pool system begins on Mondays at 00:00 UTC and concludes on the following Monday at 00:00 UTC.
Please note that at the start of the calendar week (Sundays, at 00:00 UTC) you might experience a visual glitch in which the amount of money available in the Weekly Jackpot and your current Projected Earnings reset back to zero. We're working on fixing it, and we apologize for the inconvenience in the meantime.