ἐφημερία G2183
ephēmería · ef-ay-mer-ee'-ah · Noun Feminine
from ἐφήμερος; diurnality, i.e. (specially) the quotidian rotation or class of the Jewish priests' service at the Temple, as distributed by families:--course.
2 Occurrences in the King James Bible
Luke 1:5There was in the days of Herod, the king of Judaea, a certain priest named Zacharias, of the course of Abia: and his wife was of the daughters of Aaron, and her name was Elisabeth.
Luke 1:8And it came to pass, that while he executed the priest’s office before God in the order of his course,