εὔκαιρος G2121
eúkairos · yoo'-kahee-ros · Adjective
from εὖ and καιρός; well-timed, i.e. opportune:--convenient, in time of need.
2 Occurrences in the King James Bible
Mark 6:21And when a convenient day was come, that Herod on his birthday made a supper to his lords, high captains, and chief estates of Galilee;
Hebrews 4:16Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.