Thirteen destroys balance by unbalancing the rhythm, as it cannot be evenly divided. Besides, 12 hours of the day and 12 hours of the night complete the day and night. So the thirteenth has no place either in the day or in the night. Besides, after 12 o'clock comes 1, and it marks 13. Thirteen is a number which has no accommodation. Among Western people there is a superstition that the thirteenth person at table must die within the year. This also explains that the number 13 has no accommodation. That a person dies, means that the earth accommodates him no longer.