El siguiente artículo de Avdiel Ben Oved de http://www,natzratim.com "Filón de Alejandría confirma el Shabat es conforme a la luna" lo demuestra.
XXX. (158) And the fourth commandment, the one about the seventh day, we must not look upon in any other light than as a summary of all the laws relating to festivals, and of all the purificatory rites enjoined to be observed on each of them. But the service appointed for them was one of holy ablutions, and prayers deserving to be heard, and perfect sacrifices. (159) And in speaking of the seventh here, I mean both that which is combined with the number six, the most generative of all numbers, and also that which, without being combined with the number six, is added to it, being made to resemble the unit, each of which numbers is reckoned among the festivals; for the lawgiver refers to the term, the sacred festival of the new moon, which the people give notice of with trumpets, and the day of fasting, on which abstinence from all meats and drinks is enjoined, which the Hebrews call, in their native language, pascha, on which the whole nation sacrifices, each individual among them, not waiting for the priests, since on this occasion the law has given, for one especial day in every year, a priesthood to the whole nation, so that each private individual slays his own victim on this day. (160) And also the day on which is offered the sheaf of corn, as an offering of gratitude for the fertility and productiveness of the plain, as exhibited in the fulness of the ears of corn. And the day of pentecost, which is numbered from this day by seven portions of seven days, in which it is the custom to offer up loaves, which are truly called the loaves of the first fruits, since, in fact, they are the first fruits of the productions and crops of eatable grain, which God has given to mankind, as the most tractable of all his creatures. (161) But to the seventh day of the week he has assigned the greatest festivals, those of the longest duration, at the periods of the equinox both vernal and autumnal in each year; appointing two festivals for these two epochs, each lasting seven days; the one which takes place in the spring being for the perfection of what is being sown, and the one which falls in autumn being a feast of thanksgiving for the bringing home of all the fruits which the trees have produced. And seven days have very appropriately been appointed to the seventh month of each equinox, so that each month might receive an especial honour of one sacred day of festival, for the purpose of refreshing and cheering the mind with its holiday.
XX. (96) The fourth commandment has reference to the sacred seventh day, that it may be passed in a sacred and holy manner. Now some states keep the holy festival only once in the month, counting from the new moon, as a day sacred to God; but the nation of the Jews keep every seventh day regularly, after each interval of six days;http://www.earlychristianwritings.com/yonge/book27.html
(178) The number ten is the completely perfect number which he most appropriately assigned to the animals which have been mentioned: the two young bulls since there are two motions of the moon as it continually runs its double-course--the motion of waxing until full moon and the motion of waning until its conjunction with the sun; one ram since there is one principle of reason by which the moon waxes and wanes in equal intervals, both as it increases and diminishes in illumination; the seven lambs because it receives the perfect shapes in periods of seven days--the half-moon in the first seven day period after its conjunction with the sun, full moon in the second; and when it makes its return again, the first is to half-moon, then it ceases at its conjunction with the sun.
IV. (8) But nature delights in the number seven. For there are seven planets, going in continual opposition to the daily course of the heaven which always proceeds in the same direction. And likewise the constellation of the Bear is made up of seven stars, which constellation is the cause of communication and unity among men, and not merely of traffic. Again, the periodical changes of the moon, take place according to the number seven, that star having the greatest sympathy with the things on earth. And the changes which the moon works in the air, it perfects chiefly in accordance with its own configurations on each seventh day.The Works of Philo Judaeus. The contemporary of Josephus, translated from the Greek. By Charles Duke Yonge. London, H. G. Bohn, 1854-1890.