A silent clock is a rare occurrence on 24 in which the digital clock displayed at the end of a scene or episode is silent, without the typical beeping of the clock. It occurred thirteen times and was used to punctuate the endings of highly emotional scenes. Seven of them took place around the time of the death of a significant character; the other six did not. The silent clock has been used thirteen times: once per season in seasons 1, 3, 5, 6, once in 24: Redemption, twice in seasons 2, 7, 8, and 9, but not at all in Season 4.