diurnal (adj.)
- annual
- biannual
- biennial
- bimonthly
- biweekly
- catamenial
- centenary
- centennial
- circadian
- daily
- everyday
- fortnightly
- hebdomadal
- hourly
- menstrual
- momentary
- monthly
- quarterly
- quotidian
- regular
- secular
- semestral
- semiannual
- semimonthly
- semiweekly
- tertian
- triennial
- weekly
- yearly
There swift return
Diurnal, merely to officiate light
Round this opacous earth, this punctual spot.
