From the 11th century, "anno mundi" dating became dominant throughout most of the world's Jewish communities, replacing the Seleucid dating system. The new system reached its definitive form in 1178 when Maimonides completed the "Mishneh Torah". In the section "Sanctification of the Moon" (11.16), he wrote of his choice of Epoch, from which calculations of all dates should be made, as "the third day of Nisan in this present year ... which is the year 4938 of the creation of the world" (March 22, 1178). He included all the rules for the calculated calendar epoch and their scriptural basis, including the modern epochal year in his work, and establishing the final formal usage of the "anno mundi" era. The first year of the Jewish calendar, Anno Mundi 1 (AM 1), began about one year before creation, so that year is also called the Year of emptiness. The first five days of Jewish creation week occupy the last five days of AM 1, Elul 25–29. The sixth day of creation, when Adam and Eve were created, is the first day of AM 2, Rosh Hashanah (1 Tishrei). Its associated molad Adam (molad VaYaD) occurred on Day 6 (yom Vav) at 14 (Yud Daled) hours (and 0 parts). A year earlier, the first day of AM 1, Rosh Hashanah (1 Tishrei), is associated with molad tohu (new moon of chaos), so named because it occurred before creation when everything was still chaotic—it is also translated as the new moon of nothing. This is also called molad BaHaRaD, because it occurred on Day 2 (yom Beis), 5 (Hei) hours, 204 (RaD) parts (11:11:20 pm). Because this is just before midnight when the Western day begins, but after 6 pm when the Jewish calendrical day begins (equivalent to the next tabular day with the same daylight period), its Julian calendar date is 6/7 October 3761 BCE (Gregorian: 6/7 September 3761 BCE or −3760). The Septuagint was the most scholarly non-Hebrew version of the Old Testament available to early Christians. Many converts already spoke Greek, and it was readily adopted as the preferred vernacular-language rendering for the eastern Roman Empire.