 Another era type, which occurs half as frequently (8<15), has only 22 repeats of the 49 month sequence before the 17-month end group, yielding a total of 1095 months in the era.The traditional epoch of the cycle was 5 hours 11 minutes and 20 seconds after the mean sunset (considered to be 6 hours before mean midnight) at the epoch of the Hebrew calendar (first eve of "Tishrei" of Hebrew year 1).The traditional source for this moment is as follows