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Observe that we can bisect a day into two ⚀clock periods (semi·days), each 6 ⚀dwells long (equivalent to 60zbreathers, or 600z ⚀trices, or 10z=|12d hours, or 500z=|720d minutes). But where should we make the partition? The modern Western convention, of course, is to divide the day at noon and midnight, yielding the familiar Ante Meridiem (A.M.) and Post Meridiem (P.M.⚀clock periods. These are Latin for “Before Mid-Day” and “After Mid-Day”.

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⚀Phases of the Day

PhaseLatin PhraseEnglish TranslationPeriodTrice TimeSexagesimal Time
FromToFromToFromTo
OvernightNox Ante MeridiemNighttime Before MidDayNominal MidnightMean Sunrise000z2ƐƐz12:00d A.M.05:59d A.M. 
MorningLux Ante MeridiemDaylight Before MidDayMean SunriseNominal Noon300z5ƐƐz06:00d A.M.11:59d A.M. 
AfternoonLux Post MeridiemDaylight After MidDayNominal NoonMean Sunset600z8ƐƐz12:00d P.M.05:59d P.M.
EveningNox Post MeridiemNighttime After MidDayMean SunsetNominal Midnight900zƐƐƐz06:00d P.M.11:59d P.M.

Hence the clock periods are combinations of two adjacent ⚀phases each:

⚀Clocks of the Day

Latin NameAbbrEngish TranslationConstituentsPeriod⚀Trice TimeSexagesimal Time
FromToFromToFromTo
Lux
DaylightMorning + AfternoonMean SunriseMean Sunset300z8ƐƐz06:00d A.M.05:59d P.M.
Nox
NighttimeEvening + OvernightMean SunsetMean Sunrise900z2ƐƐz06:00d P.M.05:59d A.M.
Ante MeridiemA.M.Before MidDayOvernight + MorningNominal MidnightNominal Noon0005ƐƐz12:00d A.M.11:59d A.M.
Post MeridiemP.M.After MidDayAfternoon + EveningNominal NoonNominal Midnight600zƐƐƐz12:00d P.M.11:59d P.M.

We can divide each ⚀phase into 3 ⚀dwells, and assign them names: Early, Mid, and Late:

⚀Dwells of the Day

⚀Clock (⚀Semi·day)⚀Phase (⚀Quarter·day)⚀Dwell (Uncia·day)⚀Trice TimeTGM TimeHours:⚀TricesSexagesimal Time
FromToFromToFromToFromTo




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0Early Overnight000z05Ɛz0000z00ƐƐz00:00z00:z12:00d A.M.12:59d A.M.
060z0ƐƐz0100z01ƐƐz01:00z01:z01:00d A.M.01:59d A.M.
1Mid Overnight100z15Ɛz0200z02ƐƐz02:00z02:z02:00d A.M.02:59d A.M.
160z1ƐƐz0300z03ƐƐz03:00z03:z03:00d A.M.03:59d A.M.
2Late Overnight200z25Ɛz0400z04ƐƐz04:00z04:z04:00d A.M.04:59d A.M.
260z2ƐƐz0500z05ƐƐz05:00z05:z05:00d A.M.05:59d A.M.








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3Early Morning300z35Ɛz0600z06ƐƐz06:00z06:z06:00d A.M.06:59d A.M.
360z3ƐƐz0700z07ƐƐz07:00z07:z07:00d A.M.07:59d A.M.
4Mid Morning400z45Ɛz0800z08ƐƐz08:00z08:z08:00d A.M.08:59d A.M.
460z4ƐƐz0900z09ƐƐz09:00z09:z09:00d A.M.09:59d A.M.
5Late Morning500z55Ɛz000z0ƐƐz0:00z0ᘔ:z10:00d A.M.10:59d A.M.
560z5ƐƐz0Ɛ00z0ƐƐƐz0Ɛ:00z0Ɛ:5Ɛz11:00d A.M.11:59d A.M.





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6Early Afternoon600z65Ɛz1000z10ƐƐz10:00z10:z12:00d P.M.12:59d P.M.
660z6ƐƐz1100z11ƐƐz11:00z11:z01:00d P.M.01:59d P.M.
7Mid Afternoon700z75Ɛz1200z12ƐƐz12:00z12:z02:00d P.M.02:59d P.M.
760z7ƐƐz1300z13ƐƐz13:00z13:z03:00d P.M.03:59d P.M.
8Late Afternoon800z85Ɛz1400z14ƐƐz14:00z14:z04:00d P.M.04:59d P.M.
860z8ƐƐz1500z15ƐƐz15:00z15:z05:00d P.M.05:59d P.M.




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9Early Evening900z95Ɛz1600z16ƐƐz16:00z16:z06:00d P.M.06:59d P.M.
960z9ƐƐz1700z17ƐƐz17:00z17:z07:00d P.M.07:59d P.M.
Mid Eveningᘔ00zᘔ5Ɛz1800z18ƐƐz18:00z18:z08:00d P.M.08:59d P.M.
ᘔ60zᘔƐƐz1900z19ƐƐz19:00z19:z09:00d P.M.09:59d P.M.
ƐLate EveningƐ00zƐ5Ɛz1ᘔ00z1ᘔƐƐz1ᘔ:00z1ᘔ:z10:00d P.M.10:59d P.M.
Ɛ60zƐƐƐz1Ɛ00z1ƐƐƐz1Ɛ:00z1Ɛ:z11:00d P.M.11:59d P.M.

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