Analysis of information sources in references of the Wikipedia article "Sabbath" in English language version.
III. Baháʼí: E. Miscellaneous Subjects: 372. Friday is Day of Rest in Baháʼí Calendar.
... the biblical Sabbath has no Babylonian equivalent.11 Efforts have been made to draw parallels between the Babylonian šapattu/šabattu and the Hebrew šbt, or "Sabbath," yet establishing a common etymology between these terms remains elusive.12 The Akkadian word šapattu refers almost exclusively to the fifteenth day of the month or the phenomenon of lunar alignment, i.e., both conjunction and opposition of the moon to the sun.13 It seems that the Sabbath, along with its customs and observances, is uniquely Judean in origin and developed independently of Babylonian cultic and calendrical practices.
... the biblical Sabbath has no Babylonian equivalent.11 Efforts have been made to draw parallels between the Babylonian šapattu/šabattu and the Hebrew šbt, or "Sabbath," yet establishing a common etymology between these terms remains elusive.12 The Akkadian word šapattu refers almost exclusively to the fifteenth day of the month or the phenomenon of lunar alignment, i.e., both conjunction and opposition of the moon to the sun.13 It seems that the Sabbath, along with its customs and observances, is uniquely Judean in origin and developed independently of Babylonian cultic and calendrical practices.