GCal en · PROPN Meanings (abbreviation, alt-of) Abbreviation of Google Calendar: a time-management and scheduling calendar service developed by Google. alt of Google Calendar Caps have a detailed GCal and five-year plan, and yep, they plan those same organization skills to the bedroom. 2022 December 8, Jake Register, “Everything You Need to Know About Dating a Capricorn Man”, in Cosmopolitan: