The clock applies from time of TD notification (a Player notifying the TD, or the TD announcing the clock) on Eliters Messenger, except on starting Matches at the opening of the Tourney. In RR and SR Tourneys the time will start from the Game/Round Start Time. The intent of this requirement is that there must be a public record of each use of the Time Out clock. The opponent has the obligation to request the Timer to be stopped as soon as the Player returns back to Play.
For ALL starting Matches, that are supposed to start at the opening of the Tourney (Any Round 1 Match or a Round 2 Match where both opponents had Round 1 byes) CHANGED TO (Any Round 1 Match or a Round 2 Match where both opponents had Round 1 BYEs or Donations), the clock begins at the Actual Start Time of the Tourney. All missing Players are timed as of this moment, regardless of the reason they did not start the Match, and whether or not their absence is reported immediately. This Rule does not apply on the Multiple-Day (Weekly) Tourneys, as Players are not required to be in the lobby on Tourney start time, and the timer will always be 72 Hours from the Official Start Time.