הלכה על סנהדרין 79:10

From the laws of the commandment is that which they, may their memory be blessed, said (Sanhedrin 40a) that each witness would be investigated with seven investigations, and these are them: In which sabbatical cycle from the seven sabbatical cycles within the jubilee did the event occur that he is testifying about; in which year of the seven years of the sabbatical cycle; in which month of the year; on [which day] of the month; on which day of the six days of the week; at [which hour] of the day; and in what place. And even if he said, "He killed him today," or "yesterday," we ask him all of this.