Strong’s Greek
G4315 — prosabbaton
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
προσάββατον
prosabbaton — pronounced pros-ab'-bat-on
from 4253 and 4521; a fore-sabbath, i.e. the Sabbath-eve:--day before the sabbath. Compare 3904. see GREEK for 4253 see GREEK for 4521 see GREEK for 3904
1 occurrence in the KJV.
Mark 15:42
And now when the even was come, because it was the preparation, that is, the day before the sabbath,