3. RECURRENT TIME
Regularity of recurrence. Periodicity.
[Antonyms: (irregularity of recurrence) irregularity.]
[Nouns] periodicity, intermittence; beat; oscillation [more]; pulse, pulsation; rhythm; alternation, alternateness, alternativeness, alternity.
bout, round, revolution, rotation, turn, say.
anniversary, jubilee, centenary.
catamenia; courses, menses, menstrual flux.
[Regularity of return] rota, cycle, period, stated time, routine; days of the week; Sunday, Monday, etc.; months of the year; January, etc.; feast, fast; Christmas, Easter, New Year's day.
Allhallows, Allhallowmas, All Saints' Day; All Souls', All Souls' Day; Ash Wednesday, bicentennial, birthday, bissextile, Candlemas, Dewali, Groundhog Day [U.S.], Halloween, Hallowmas, Lady day, leap year, Midsummer day, Muharram, Woodchuck Day [U.S.], St. Swithin's day, natal day; yearbook; yuletide.
punctuality, regularity, steadiness.
hourly; diurnal, daily; quotidian, tertian, weekly; hebdomadal, hebdomadary; biweekly, fortnightly; bimonthly; catamenial; monthly, menstrual; yearly, annual; biennial, triennial; centennial, secular; paschal, lenten, etc.
regular, steady, punctual, regular as clockwork.
by turns; in turn, in rotation; alternately, every other day, off and on, ride and tie, round and round.