juncture (n.)

late 14c., "place where two things are joined," from Latin iunctura "a joining, uniting, a joint," from iunctus, past participle of iungere "to join together," from nasalized form of PIE root *yeug- "to join." Meaning "action of joining together" is from 1580s. Sense of "point in time" first recorded 1650s, probably from astrology.