Strong's G2183 — ἐφημερία (noun)
ephemeria (ef-ay-mer-ee'-ah) n.
1. diurnality
2. (specially) the quotidian rotation or class of the Jewish priests' service at the Temple, as distributed by families
[from G2184]
KJV: course 
Root(s): G2184 
Hebrew root: ἐφήμερος
Occurrences: 2