coincide (v.)

1705, "be identical in substance or nature;" 1715, "occupy the same space, agree in position," from Medieval Latin coincidere (used in astrology), literally "to fall upon together," from assimilated form of  Latin com "with, together" (see com-) + incidere "to fall upon" (from in- "upon" + combining form of cadere "to fall," from PIE root *kad- "to fall"). From 1809 as "occur at the same time." Related: Coincided; coinciding. Latin coincidere was used as a verb in English from 1640s.