The first day of the month in the Roman calendar also meant payday. In the Middle Ages, the Kaland-brotherhoods were founded on this basis. The Kalands were, along with the Nones, Ides, and Terminalia, one of the four fixed holidays that each month of the Roman calendar had. These four holidays originally designated the quarters of the moon (Kalends: New Moon, Ides: Full moon, Nones and Terminalia: waxing and waning crescent moon, respectively).
The Roman historian Dio Cassius, 150-220, noted that the pagan planetary week with Saturns day as the first day of the week was still in use during his time. It was apparently still in use until after Constantine instigated Sunday worship in 321 and changed the pagan planetary week to a Christian planetary week with Sunday as the first day of the week. He also officially changed the Roman calendar to an uninterrupted seven-day cycle to take the place of the Nones, the 8-day market week initiated by Julius Caesar in 46 BCE.
The old Roman calendar was based on the moon and had an EIGHT-DAY WEEK that was simply the PERIOD OF TIME BETWEEN MARKET DAYS! The eight-day weeks were totally independent of monthly divisions called Calends, Nones and Ides. At the end of each year the A through H cycle was BROKEN. The first day of the next year was always designated by the letter "A" to begin a NEW CYCLE, but the market day's letter itself changed
Fasti Antiates – reconstruction of the only known pre-Julian calendar in existence, showing the letters of the nundinal cycle from A to H (an eight-day market week)It is important to remember that the Biblical week as an individual unit of time defined in Genesis 1, consisted of only seven days: six working days followed by a Sabbath rest on the last day of the week. The eight-day cycle of the Julian calendar was in use at the time of Christ. However, the Jews would not have kept the seventh-day Sabbath on the eight-day weekly cycle of the Julian calendar. This would have been idolatry to them.
An example of a Julian calendar dating from the time of Augustus (63 B.C. – 14 A.D.) to Tiberius8 (42 B.C. – 37 A.D.), is preserved on these stone fragments. The eight-day week is clearly discernible on them
A later seven-day week Julian calendar, as seen in the following drawing of a stick calendar found at the Baths of Titus (constructed 79– 81 A.D.), provides further proof that the Biblical Sabbath can never be found using the Julian calendar
The center circle contains the 12 signs of the zodiac, corresponding to the 12 months of the year. The Roman numerals to the left and right indicate the days of the month. Across the top of the stick calendar appear the seven planetary g-ds of the pagan Romans. Saturday (or dies Saturni – the day of Saturn) was the very first day of the week, not the seventh. As the g-d of agriculture, he can be seen in this preeminent position of importance, holding his symbol, a sickle. Next, on the second day of the pagan planetary week, is seen the sun g-d with rays of light emanating from his head. The second day of the week was originally dies Solis (the day of the Sun – Sunday). The third day of the week shows the moon g-ddess, with the horned crescent moon as a diadem on her head. Her day was dies Lunæ (day of the Moon – Monday). The rest of the days are represented by the other planetary g-ds, ending with dies Veneris (day of Venus, which in Northern European languages was changed to a Norse g-dess and became Friga’s day, or Friday.
Although the seven-day planetary week became popularized in Rome with the rise of the cult of Mithras, it did not become official until Constantine standardized the week at the Council of Nicæa.
In light of these facts, it is illogical to assume that the Gregorian Saturday is the Biblical Sabbath of Creation.
An ancient proverb states: “He who controls the calendar, controls the world.” Who controls you? The day on which you worship, calculated by the calendar you use, reveals which G-d/g-d is in control of you. Worship on the true Sabbath is a sign of loyalty to our Creator. Only the Creator, the One in control of the sun, moon and stars, His calendar, has the right to tell His people when to worship and, by virtue of that right, to receive that worship.
A wall inscription of Pompeii in the first century, graffito on a column of the epistyle, a crossbeam in ancient architecture that connects the columns in the substructure and supports the superstructure, has the following wording
"Nerone Caesare Augusto I Cosso Lentulo Cossi fil(io) co(n)s(ulibus) I VIII idus Febr(u)arias I dies Solls, luna X////X", nun(dinis) Cumis, V nun(dinas) Pompeis"
"In the consulship of Emperor Nero and Cossus Lentulus, son of Cossus, on February 6, the day of the sun, on the 16th day of the moon, on the market day of Cumae, on the 5th day before the market day of Pompeii."
If the day of the Sun is the 16th day of the Moon, then the day of Saturn is the 15th day of the Moon
In the biblical calendar, the Sabbaths fall on the 8-15-22-29 day of the month.
The author of an article from the journal Archaeology of Switzerland, Regula Frei-Stolba, Swiss ancient historian, epigraphist, numismatist and politician, notes:
Here an error has occurred, as this apparently often happened: The year 60 and the day - re? calculated: February 6 - do not agree with the indicated day of the week - Sunday, since February 6, 60 CE, was a Wednesday.
With certainty no mistake has been made here, the mistake comes from the assumption of the weekday cycle as we know it today. In fact, the day of Saturn always fell on the 8th 15th 22nd and 29th day of the month. The calendar of the Roman Republic, like all ancient calendars, was originally based on lunar cycles. Saturn's day on the 1-8-15-22-29 day of the lunar month coincided with the biblical Sabbath 8-15-22-29 day of the month.
Therefore, its author can also write
The knowledge and use of the weekday g-ds is attested in Rome since the Augustan period: The first secured testimony concerns a passage from the Elegies of Tibull, who mentions Saturn's day, but at the same time sees in it the Jewish Sabbath
The first day of the week began with the day of Saturn as the author herself admits:
"This seven-day planetary week began with Saturn's day":
and further down she writes:
'This is attested to in Pompeii by a mural with medallions of the weekday g-ds and a wall inscription from a triclinium with the series of weekday g-ds, beginning, as always, with Saturn'.