The number 33 is significant in Dark.
- Time travel through a wormhole is possible in increments of 33 years. For example, from 1986 one can travel 33 years in the past to 1953 or 33 years in the future to 2019.
- The lunar-moon cycle, when the sun and moon align, repeats every 33 years.
- 33 sheep died simultaneously in 1986.
- The veterinarian who reports it quotes Mark 13:33 Be on guard! Be alert! You do not know when that time will come.
- H.G. Tannhaus mentions the significance of the number to Jonas: Jesus performed 33 miracles, 33 litanies of the angels, and Dante's 33 cantos in purgatory and 33 in paradise. Jonas adds that 33 is the age the anti-christ begins his rule.
Other references outside the show
- Jesus Christ was 33 years old at his death and resurrection.