Analysis of information sources in references of the Wikipedia article "Traditional Jewish chronology" in English language version.
In the Jewish Diaspora they would write in their contracts, 'According to the counting of the Grecians, being a thousand [years since the exodus from Egypt']." This arcane statement is explained by Eliyahu of Vilna, in his commentary on Seder Olam as follows: "Being a thousand. Meaning, from the exodus of Egypt is reckoned a thousand years. That is to say, 480 [years passed] till the building of the [first] temple, and 410 [years being] the time of its duration, and 52 [years passed] till the kingdom of Persia [usurped authority over the Babylonian kingdom], and 52 [years being the duration] of the Persian kingdom [until their hegemony over Israel was taken by Macedonia], and 6 [years] of the kingdom of Greece (i.e. 312 BCE, thought to have been the 6th year of Alexander's reign)– all total, one-thousand years. It was during that time that they began to reckon the date in contracts, 'According to the kingdom of Grecia'.
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: CS1 maint: location missing publisher (link)When the Temple was destroyed the first time, it was the day after the Sabbath and the year after the Sabbatical year
In the Jewish Diaspora they would write in their contracts, 'According to the counting of the Grecians, being a thousand [years since the exodus from Egypt']." This arcane statement is explained by Eliyahu of Vilna, in his commentary on Seder Olam as follows: "Being a thousand. Meaning, from the exodus of Egypt is reckoned a thousand years. That is to say, 480 [years passed] till the building of the [first] temple, and 410 [years being] the time of its duration, and 52 [years passed] till the kingdom of Persia [usurped authority over the Babylonian kingdom], and 52 [years being the duration] of the Persian kingdom [until their hegemony over Israel was taken by Macedonia], and 6 [years] of the kingdom of Greece (i.e. 312 BCE, thought to have been the 6th year of Alexander's reign)– all total, one-thousand years. It was during that time that they began to reckon the date in contracts, 'According to the kingdom of Grecia'.
When the Temple was destroyed the first time, it was the day after the Sabbath and the year after the Sabbatical year
Commentary: In the lunar month Av of 5566 anno mundi (corresponding to 1806 CE), the Second Temple's destruction occurred 1738 years ago (i.e. in 68 CE), and the First Temple's destruction occurred 2228 years ago (i.e. in 422 BCE).