text: if a vampire were jewish, would his sabbath start at sunrise ?   sabbath is determined by god, not by the individual. so, "no".  sabbath always starts just before the sun sets on the 6th day of the week ("friday"), and ends after the sun sets at the end of the next day.  secondly, drinking blood (whether animal or human) is forbidden by torah.  therefore, a jew is not permitted to be a vampire of any sort.