Time period Moderate

year month minute prescription week century day evening hour present morning summer future modern past always semester now ago

fundamental quantity

trial period time frame grace hours downtime uptime work time time off bout hospitalization travel time times time elapsed time duration week midweek field day life millennium bimillennium occupation past shelf life puerperium lactation time of life calendar day festival day morning night eve evening fortnight weekend Indian summer year school semester bimester Olympiad lustrum decade century quadrennium quinquennium half-century quarter-century quarter phase of the moon calendar month mid-January mid-February mid-March mid-April mid-May mid-June mid-July mid-August mid-September mid-October mid-November mid-December time limit term trimester hour silly season Golden Age silver age bronze age iron age great year regulation time overtime season dog days midwinter long time long run drought era generation prehistory reign run youth dawn sleep lease half life tide phase multistage watch peacetime wartime enlistment honeymoon indiction prohibition incubation period rainy day novitiate flower running time clotting time air alert question time real time study hall usance window

iod period hesiod subperiod epitheliod gyroperiod semiperiod foreperiod dry period day period edo period nara period long period semi period test period rest period late period scotoperiod zero period safe period