as _dies Saturni_ or
_Kronike_, mentioned by Roman and Greek writers, before the names of the
other days of the week made their appearance. Tibullus speaks of the day
of Saturn, _dies Saturni_; Julius Frontinus (under Nerva, 96-98) says that
Vespasian attacked the Jews on the day of Saturn, _dies Saturni_; and
Justin Martyr (died 165) states that Christ was crucified the day before
the day of Kronos, and appeared to his disciples the day after the day of
Kronos. He does not use the names of Friday and Sunday. Sunday, as _dies
Solis_, is mentioned by Justin Martyr ("Apolog." i. 67), and by Tertullian
(died 220), the usual name of that day amongst Christians being the
Lord's-day, {~GREEK CAPITAL LETTER KAPPA~}{~GREEK SMALL LETTER UPSILON~}{~GREEK SMALL LETTER RHO~}{~GREEK SMALL LETTER IOTA~}{~GREEK SMALL LETTER ALPHA~}{~GREEK SMALL LETTER KAPPA~}{~GREEK SMALL LETTER ETA WITH OXIA~}, _dominica_ or _dominicus_. Clemens of Alexandria
(died 220) seems to have been the first who used the names of Wednesday
and Friday, {~GREEK CAPITAL LETTER EPSILON WITH DASIA~}{~GREEK SMALL LETTER RHO~}{~GREEK SMALL LETTER MU~}{~GREEK SMALL LETTER OMICRON~}{~GREEK SMALL LETTER UPSILON WITH PERISPOMENI~} {~GREEK SMALL LETTER KAPPA~}{~GREEK SMALL LETTER ALPHA~}{~GREEK SMALL LETTER IOTA WITH VARIA~} {~GREEK CAPITAL LETTER ALPHA WITH PSILI~}{~GREEK SMALL LETTER PHI~}{~GREEK SMALL LETTER RHO~}{~GREEK SMALL LETTER OMICRON~}{~GREEK SMALL LETTER DELTA~}{~GREEK SMALL LETTER IOTA WITH OXIA~}{~GREEK SMALL LETTER TAU~}{~GREEK SMALL LETTER ETA~}{~GREEK SMALL LETTER FINAL SIGMA~} {~GREEK SMALL LETTER ETA WITH DASIA~}{~GREEK SMALL LETTER MU~}{~GREEK SMALL LETTER EPSILON WITH OXIA~}{~GREEK SMALL LETTER RHO~}{~GREEK SMALL LETTER ALPHA~}.

It is generally stated, on the authority of Cassius Dio, that the system
of counting by weeks and weekdays was first introduced in Egypt, and that
at his time, early in the third century, the Romans had adopted it, though
but recently. Be this as it may, it would seem that, if Tibullus could use
the name of _dies Saturni_ for Saturday, the whole system of weekdays must
have been settled and known at Rome in his time. Cassius Dio tells us that
the names were assigned to each day {~GREEK SMALL LETTER DELTA~}{~GREEK SMALL LETTER IOTA~}{~GREEK SMALL LETTER ALPHA WITH VARIA~} {~GREEK SMALL LETTER TAU~}{~GREEK SMALL LETTER EPSILON~}{~GREEK SMALL LETTER SIGMA~}{~GREEK SMALL LETTER SIGMA~}{~GREEK SMALL LETTER ALPHA WITH OXIA~}{~GREEK SMALL LETTER RHO