onetime

common, commonplace, everyday, familiar, ordinary, routine, ubiquitous, usual

cyclic (or cyclical)

around-the-clock, constant, continual, hourly, round-the-clock

accustomed, chronic, confirmed, customary, habitual, inveterate

expected

annual, yearly

contemporary, current, extant, ongoing, present, present-day

coming, future, prospective, unborn