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Shabbat and the New Moon

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Rabbi Elchanan Lewis

8 Iyyar 5765
Question
Recently I have been presented with the argument that with each new moon, the beginning of a new month begins the counting of the days so that Shabbath does not always fall on "Saturday" but seven days after the first new moon sighting. I believe that G-d set the 7 days from the beginning of time and that is the standard. Nowhere do I read in the scriptures where it states count 7 days from the first new moon and then it is Shabbat. If that were so would not G-d’s Chosen be honoring it? What do you say?
Answer
You are completely right – the days of the month begin from the new moon and the days of the week are fixed from the first Shabbat 5765 years ago.
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