Compute Coordinated Universal Time (UTC/GMT) for Specified Local Time.
utc0(date = "2020-01-01", time = "12:00:00", tz = "Europe/Vienna")
Character. Date "yyyy-mm-dd".
Character. Local time "hh:mm" or "hh:mm:ss".
Character. Local time zone. See OlsonNames() or use Sys.timezone().