All time calculations (both for Time limit and for Silence) are counted in days and not in hours-minuites-seconds.

If you respond in less tahn 24 hours it is counted as zero days. 24-48 hours is counted as 1 day and so on.

The clock time starts as soon as the move from the opponent arrives. For White's first move the clock starts at 00:00:00 on the starting day of the tournament.