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YIH THANKSGIVING 2020 "5781?" The 'Missing' 168 Years from Our Calendar

Traditional Aramaic Ketubah Text

... בשבת ... לחדש ... שנת חמשת אלפים ושבע מאות ... לבריאת עולם למנין שאנו מנין כאן ... איך ... בן ... אמר לה להדא ... בת ... הוי לי לאנתו כדת משה וישראל

(see Nachlas Shiva 5 footnote 11)

"X# YEARS FROM CREATION AS WE COUNT...IN QUEENS"?!
Are the years not the same elsewhere? Where?
Why is this language in our Kesubos?
Pischei Teshuva to Shulchan Aruch eh'e 127:16
(טז)לבריאת עולם כשר. כ' בס' ג"פ דין זה דקדק איתו התוס' והרא"ש כו' ואני רוצה להיכיח מכאן דין חדש והוא כשנקדים דבמנין בריאת עולם יש הפרש בין בני מזרח לבני מערב שנה אחת כו' באופן דבמנין שנות היצירה אנחנו בני המערב דמונין למולד בהר"ד אנו מונין שנה יתירה לבני המזרח המינין ליצירה למולד וי"ד (עיין בתוספו' במס' ר"ה דף ח' סד"ה לתקופות) ובני המזרח דמינין למולד וי"ד פוחתין שנה למונין למולד בהר"ד וכיון שכן אם בעירות בני המזרח המונין למולד וי"ד יצא להם שטר או גט בשנה יתירה לפי חשבונם אין לדון אותו שטר ואותי גט למאוחר דאמרי' ספרא דוקנא כתביה ומנה מניינו למולד בהר"ד כדחזינן דהליץ רבא (צ"ל רב נחמן) בעד אותו שטר שהי' מאוחר שש שנים יתירות. ולדידן דאנו מונין למולד בהר"ד אם פיחת שנה אחת אין לדון אותו למוקדם ולפוסלו דתלינן דמנה למולד וי"ד באופן דאין השטר והגט מוקדם וכשר כן נראה להלכה ולענין מעשה אין ולאו ורפיא בידי. ואפשר דמפני חילוק זה דיש מונין למולד וי"ד ויש מונין למולד בהר"ד נהגו לכתוב בגיטין למנין שאנו מונין כאן כדי שנדע לאיזה ענין היא מפרש ואומר כי הוא כותב לפי מנהג העיר כלו' למולד בהר"ד ומשם נדע אם הוא מוקדם אי מאוחר או בזמנו נכתב עכ"ל ועמ"ש לקמן בביאורי בסג"ר אות ק"ז:
It is clear from this source that there are a number of ways of calculating the years from creation. What did he mean by. BAHaRaD?
And, anyway, should not we all have the same year from creation?

(א) וַיְדַבֵּ֨ר יהוה אֶל־מֹשֶׁ֛ה בְּמִדְבַּ֥ר סִינַ֖י בְּאֹ֣הֶל מוֹעֵ֑ד בְּאֶחָד֩ לַחֹ֨דֶשׁ הַשֵּׁנִ֜י בַּשָּׁנָ֣ה הַשֵּׁנִ֗ית לְצֵאתָ֛ם מֵאֶ֥רֶץ מִצְרַ֖יִם לֵאמֹֽר׃

(1) On the first day of the second month, in the second year following the exodus from the land of Egypt, the LORD spoke to Moses in the wilderness of Sinai, in the Tent of Meeting, saying:

(א) וַיְהִ֣י בִשְׁמוֹנִ֣ים שָׁנָ֣ה וְאַרְבַּ֣ע מֵא֣וֹת שָׁנָ֡ה לְצֵ֣את בְּנֵֽי־יִשְׂרָאֵ֣ל מֵאֶֽרֶץ־מִצְרַיִם֩ בַּשָּׁנָ֨ה הָרְבִיעִ֜ית בְּחֹ֣דֶשׁ זִ֗ו ה֚וּא הַחֹ֣דֶשׁ הַשֵּׁנִ֔י לִמְלֹ֥ךְ שְׁלֹמֹ֖ה עַל־יִשְׂרָאֵ֑ל וַיִּ֥בֶן הַבַּ֖יִת לַיהוה׃

(1) In the four hundred and eightieth year after the Israelites left the land of Egypt, in the month of Ziv—that is, the second month—in the fourth year of his reign over Israel, Solomon began to build the House of the LORD.

(י) וַיְהִ֗י מִקְצֵה֙ עֶשְׂרִ֣ים שָׁנָ֔ה אֲשֶׁר־בָּנָ֥ה שְׁלֹמֹ֖ה אֶת־שְׁנֵ֣י הַבָּתִּ֑ים אֶת־בֵּ֥ית יהוה וְאֶת־בֵּ֥ית הַמֶּֽלֶךְ׃

(10) At the end of the twenty years during which Solomon constructed the two buildings, the LORD’s House and the royal palace—

(א) בְּעֶשְׂרִ֣ים וְחָמֵ֣שׁ שָׁנָ֣ה לְ֠גָלוּתֵנוּ בְּרֹ֨אשׁ הַשָּׁנָ֜ה בֶּעָשׂ֣וֹר לַחֹ֗דֶשׁ בְּאַרְבַּ֤ע עֶשְׂרֵה֙ שָׁנָ֔ה אַחַ֕ר אֲשֶׁ֥ר הֻכְּתָ֖ה הָעִ֑יר בְּעֶ֣צֶם ׀ הַיּ֣וֹם הַזֶּ֗ה הָיְתָ֤ה עָלַי֙ יַד־יהוה וַיָּבֵ֥א אֹתִ֖י שָֽׁמָּה׃

(1) In the twenty-fifth year of our exile, the fourteenth year after the city had fallen, at the beginning of the year, the tenth day of the month—on that very day—the hand of the LORD came upon me, and He brought me there.

(א) בִּשְׁנַ֤ת שְׁתַּ֙יִם֙ לְדָרְיָ֣וֶשׁ הַמֶּ֔לֶךְ בַּחֹ֙דֶשׁ֙ הַשִּׁשִּׁ֔י בְּי֥וֹם אֶחָ֖ד לַחֹ֑דֶשׁ הָיָ֨ה דְבַר־יהוה בְּיַד־חַגַּ֣י הַנָּבִ֗יא אֶל־זְרֻבָּבֶ֤ל בֶּן־שְׁאַלְתִּיאֵל֙ פַּחַ֣ת יְהוּדָ֔ה וְאֶל־יְהוֹשֻׁ֧עַ בֶּן־יְהוֹצָדָ֛ק הַכֹּהֵ֥ן הַגָּד֖וֹל לֵאמֹֽר׃

(1) In the second year of King Darius, on the first day of the sixth month, this word of the LORD came through the prophet Haggai to Zerubbabel son of Shealtiel, the governor of Judah, and to Joshua son of Jehozadak, the high priest:

(ה) כָּתַב...לְבִנְיַן הַבַּיִת, לְחֻרְבַּן הַבַּיִת

(5) If the get was dated...by the building of the Temple or by the destruction of the Temple,

Recently discovered (Tzoar) gravesites from around 400 CE. Inscriptions date deaths from Churban Bayis Sheni

.... אמר רב נחמן האי ספרא דוקנא כתביה והנך שית שנין דמלכו בעילם דאנן לא חשבינן להו הוא קחשיב ליה ובזמניה כתביהדתניא ר' יוסי אומר שש שנים מלכו בעילם ואח"כ פשטה מלכותן בכל העולם כולו:

...Rav Naḥman disagreed and said: This promissory note was written by an exacting scribe, and those six years are referring to the years when the Greeks ruled only in Elam. We do not count them, as Greek rule had not yet spread throughout the world, but he does count them. And therefore he wrote in the promissory note the correct time, as the date does in fact match the year in which the promissory note was written.Rav Naḥman cites a proof for his resolution: As it is taught in a baraita that Rabbi Yosei says: The Greeks ruled for six years in Elam alone, and afterward their dominion spread throughout the entire world. It is the later event that serves as the basis for the dating system used by most scribes.

(ד) נִמְצֵאתָ לָמֵד שֶׁהַשָּׁנָה שֶׁחָרַב בָּהּ הַבַּיִת בָּאַחֲרוֹנָה שֶׁתְּחִלָּתָהּ מִתִּשְׁרֵי שֶׁאַחַר הַחֻרְבָּן כִּשְׁנֵי חֳדָשִׁים שֶׁהֲרֵי מִתִּשְׁרֵי הוּא הַמִּנְיָן לִשְׁמִטִּים וּלְיוֹבְלוֹת אוֹתָהּ הַשָּׁנָה מוֹצָאֵי שְׁבִיעִית הָיְתָה. וּשְׁנַת ט''ו מִן הַיּוֹבֵל הַתְּשִׁיעִי הָיְתָה. וּלְפִי חֶשְׁבּוֹן זֶה שָׁנָה זוֹ שֶׁהִיא שְׁנַת אֶלֶף וּמֵאָה וְשֶׁבַע לַחֻרְבָּן שֶׁהִיא שְׁנַת שְׁמוֹנִים וְשִׁבְעָה וְאֶלֶף וְאַרְבַּע מֵאוֹת לְמִנְיַן שְׁטָרוֹת שֶׁהִיא שְׁנַת שֵׁשׁ וּשְׁלֹשִׁים וּתְשַׁע מֵאוֹת וְאַרְבַּעַת אֲלָפִים לַיְצִירָה הִיא שְׁנַת שְׁמִטָּה וְהִיא שְׁנַת אַחַת וְעֶשְׂרִים מִן הַיּוֹבֵל:

(4) Hence you may infer that the year in which the last Temple was destroyed, beginning with Tishri or two months following the destruction, since the count of shemittoth and jubilees is from Tishri, was the year after the sabbatical year and the fifteenth year of the ninth jubilee. According to this computation, the present year, the year one thousand one hundred and seven since the destruction, which is the year one thousand four hundred and eighty-seven of the Seleucidan Era, used in dating documents, which is four thousand nine hundred and thirty-six since the Creation, is a sabbarical year and the twenty-first year of jubilee.

We see the Greek count in Maccabees (in a number of places), e.g.:

(א) ויהי אחרי הכות אלכסנדרוס מלך מקדוניא את דריוש מלך פרס, וימלוך תחתיו.

(1) And it came to pass, after the triumph of Alexandros the Makedonian, son

(ב) הוא אלכסנדרוס בן פוליפוס אשר יצא מארץ כיתים, וימלוך בארץ יון לראשונה.

(2) of Philippos, who first reigned in Hellas, who came out of the land of Khettiim, had defeated Dareios king of the Persians and the Medes:

And, in Megillas Antioches we find the calculation from...Bayis Sheni's building:
MEGILLAS ANTIOCHES:
:בִּשׁנַת עַסרִין וּתלָת שְׁנִין לְמִמלְכֵיהּ, בִּשׁנַת מָאתַן וּתלָת עֲסַר שְׁנִין לְבִניַין בֵּית אֱלָהָא דֵיך, שַׁוִּי .אַנפּוֹהִי לְמִיסַּק לִירוּשְׁלֵם Literal translation: In the twenty third year of his kingdom, in the two-hundred and thirteenth year of the rebuilding of this, God's house, he (Antiochus Eupator) put his face to go up to Jerusalem.

(יב) וזה הוא נוסח הגט
בְּכָךְ בְּשַׁבָּת בְּכָךְ וְכָךְ לְיֶרַח פְּלוֹנִי בִּשְׁנַת כָּךְ וְכָךְ לַיְצִירָה אוֹ לַשְּׁטָרוֹת לְמִנְיָנָא דְּרָגִילְנָא לְמִימְנֵי בָּהּ הָכָא בְּמָקוֹם פְּלוֹנִי אֵיךְ...

So then, how Do we know what year we are in???
Let us start, well, at the start...

(ג) וַֽיְחִ֣י אָדָ֗ם שְׁלֹשִׁ֤ים וּמְאַת֙ שָׁנָ֔ה וַיּ֥וֹלֶד בִּדְמוּת֖וֹ כְּצַלְמ֑וֹ וַיִּקְרָ֥א אֶת־שְׁמ֖וֹ שֵֽׁת׃(ד) וַיִּֽהְי֣וּ יְמֵי־אָדָ֗ם אַֽחֲרֵי֙ הוֹלִיד֣וֹ אֶת־שֵׁ֔ת שְׁמֹנֶ֥ה מֵאֹ֖ת שָׁנָ֑ה וַיּ֥וֹלֶד בָּנִ֖ים וּבָנֽוֹת׃(ה) וַיִּֽהְי֞וּ כָּל־יְמֵ֤י אָדָם֙ אֲשֶׁר־חַ֔י תְּשַׁ֤ע מֵאוֹת֙ שָׁנָ֔ה וּשְׁלֹשִׁ֖ים שָׁנָ֑ה וַיָּמֹֽת׃

(3) When Adam had lived 130 years, he begot a son in his likeness after his image, and he named him Seth.(4) After the birth of Seth, Adam lived 800 years and begot sons and daughters.(5) All the days that Adam lived came to 930 years; then he died.

Based on this verse, one would ASSUME that Adam dies in the 930th year from creation.
And then, Avraham was born in 1948;
Yitzchak in 2048
400 years later was was Yetzias Mitzraim, etc, etc. etc.
BUT THEN WHY DOES EVERY KINNOS USE A DIFFERENT DATE FOR CHURBAN BAYIS SHENI:
68CE
69CE
70CE
????
WE FIRST, THEN, NEED TO EXPLAIN THE THREE METHODS OF ESTABLISHING 'YEAR ONE':
Rabbi Moshe Taub
SC #127 (Ami Magazine - 2013)
..."...This question also relates to the Molad. Since our Molad goes backward all the way to creation, our counting of years should start at whenever the first Molad was.
Those who argue that Year 1 was before Adam understand as follows: Year 1 began with Molad 1 which took place on Ba’Ha’Ra’D, Monday (Sunday night) a little after 11pm. This is called Molad Tohu.
"This first Molad (Molad Bereishis), is alluded to in the Torah. Molad Bereishis, or MB, is 42. Starting with the first letter of the Torah (Beis, for second day of week), count 42 letters and one comes to Hei (for fifth hour of that day), count again 42 letters and one comes to Reish (for 200 chelakim), and count again 42 letters and one come to Daled (for four, i.e. 204 chelakim), this is the acronym for Ba’Ha’Ra’D!
"According to the second view, the very first Molad took place on Friday after the creation of Adam Harishon, in the 14th hour of the day (Va’YD). Tosphos explains this calculation as follows: since we know (based on Sanhedrin 38b) that Adam was first commanded in mitzvos 7 hours after he was created, which works out to the 9th hour of the day, amd we also know that it takes about 6 hours between the Molad and Kiddush Hachodesh, then, if like Bnei Yisroel the first Mitzvah that Adam performed was Kiddush Hachodesh, then the its Molad word have had to have fallen on Va”YD.
For those readers who are still following this, admittedly, complicated column, yes, if your work backward from the last Molad announced in shul (Sivan of 5773), and subtract 29.5/12/44/3.3 12 times for 5773 years you will get to Va’YD of creation. It works out perfectly!
"In addition, if one uses the trick above for figuring out the time of the Molad from one year to the next (4 days, 8 hours, 876 chalakim), then starting with Va’YD it comes to exactly Ba’Ha’Ra’D! (See however the controversial Meor Anayim bmz’lk maamer 2, and, Chazon Ish Orlah 16, both as brought in Encyclopedia Tamudis 2:376 footnote 22 in discussion if this is a halacha Moshe MiSinai, or a retroactive calculation introduced by Hillel)."....
......Already in the days of the gemara there was a debate regarding Year 1 of creation, or better said, Year 0. Adam was created on the Friday six days after creation, and indeed it would seem that the gemara began our year count from that moment. However this would make the five preceding days Year 0. Others argue with this and suggest that we count the first five days as its own ‘year’, thus Adam’s creation marshaled in Year 2. The Beis Yosef (y’di siman 331 s.v. V’shemitta) explains that this debate is the source of our discrepancy. In other words, any date that we find in the Seder Olam (or this Rashi, as the bavli also seemed to have accepted the Year 0) we would need to add a year to based on how we start the count. So although we all agree on the ‘year’ of creation –as the Kuzari asserted –we do not, however, agree on what to count as the first year (see Artscroll, Ezra, pg. 58 footnote 2 where they use the year of the destruction of the first temple as an example; Seder Olam records it as 3838, we would need to consider that, based on our counting, as 3839).
[See also Rambam, Hilchos Kiddush Levana 6:8]
Option #1
1ST DAY-6TH DAY -YEAR 1; ADAM BEGINS YEAR 2, ETC (Until Avraham is botn in 1950)
Option #2
1ST DAY -6TH DAY-YEAR 0; ADAM BEGINS YEAR 1 (Until Avraham is born in 1949)
Option #3
ADAM IS YEAR 0; THE NEXT YEAR IS YEAR ONE (until Avraham is born in 1948)
(In addition to the above, see Rashi to Eiruchin 12b [cf. Rashi to AZ 9b] if the 420 years that the second BEis Hamikdosh stood -as explained below -included it year of destruction; see also Hilchos Shemttia V'Yovel Rambam 10:4)
So, how did the Bavli calculate?

בני בנים הרי הן כבנים... דתניא רבי יהושע אומר נשא אדם אשה בילדותו ישא אשה בזקנותו היו לו בנים בילדותו יהיו לו בנים בזקנותו שנא' (קהלת יא, ו) בבקר זרע את זרעך ולערב אל תנח ידך כי אינך יודע אי זה יכשר הזה או זה ואם שניהם כאחד טוביםר"ע אומר למד תורה בילדותו ילמוד תורה בזקנותו היו לו תלמידים בילדותו יהיו לו תלמידים בזקנותו שנא' בבקר זרע את זרעך וגו' אמרו שנים עשר אלף זוגים תלמידים היו לו לרבי עקיבא מגבת עד אנטיפרס וכולן מתו בפרק אחד מפני שלא נהגו כבוד זה לזהוהיה העולם שמם עד שבא ר"ע אצל רבותינו שבדרום ושנאה להם ר"מ ור' יהודה ור' יוסי ורבי שמעון ורבי אלעזר בן שמוע והם הם העמידו תורה...

Grandchildren are considered like children. ....If he had children in his youth, he should have more children in his old age, as it is stated: “In the morning sow your seed, and in the evening do not withhold your hand; for you do not know which shall prosper, whether this or that, or whether they both alike shall be good” (Ecclesiastes 11:6). This verse indicates that a man should continue having children even after he has fulfilled the mitzva to be fruitful and multiply.Rabbi Akiva says that the verse should be understood as follows: If one studied Torah in his youth he should study more Torah in his old age; if he had students in his youth he should have additional students in his old age, as it is stated: “In the morning sow your seed, etc.” They said by way of example that Rabbi Akiva had twelve thousand pairs of students in an area of land that stretched from Gevat to Antipatris in Judea, and they all died in one period of time, because they did not treat each other with respect.And the world was desolate of Torah until Rabbi Akiva came to our Rabbis in the South and taught his Torah to them. This second group of disciples consisted of Rabbi Meir, Rabbi Yehuda, Rabbi Yosei, Rabbi Shimon, and Rabbi Elazar ben Shamua. And these are the very ones who upheld the study of Torah at that time...

According to some calculations, Rav Yosi is the 5th most quoted Tanna in all of Shas!

(א) וַאֲנִי֙ בִּשְׁנַ֣ת אַחַ֔ת לְדָרְיָ֖וֶשׁ הַמָּדִ֑י עָמְדִ֛י לְמַחֲזִ֥יק וּלְמָע֖וֹז לֽוֹ׃(ב) וְעַתָּ֕ה אֱמֶ֖ת אַגִּ֣יד לָ֑ךְ הִנֵּה־עוֹד֩ שְׁלֹשָׁ֨ה מְלָכִ֜ים עֹמְדִ֣ים לְפָרַ֗ס וְהָֽרְבִיעִי֙ יַעֲשִׁ֤יר עֹֽשֶׁר־גָּדוֹל֙ מִכֹּ֔ל וּכְחֶזְקָת֣וֹ בְעָשְׁר֔וֹ יָעִ֣יר הַכֹּ֔ל אֵ֖ת מַלְכ֥וּת יָוָֽן׃(ג) וְעָמַ֖ד מֶ֣לֶךְ גִּבּ֑וֹר וּמָשַׁל֙ מִמְשָׁ֣ל רַ֔ב וְעָשָׂ֖ה כִּרְצוֹנֽוֹ׃(ד) וּכְעָמְדוֹ֙ תִּשָּׁבֵ֣ר מַלְכוּת֔וֹ וְתֵחָ֕ץ לְאַרְבַּ֖ע רוּח֣וֹת הַשָּׁמָ֑יִם וְלֹ֣א לְאַחֲרִית֗וֹ וְלֹ֤א כְמָשְׁלוֹ֙ אֲשֶׁ֣ר מָשָׁ֔ל כִּ֤י תִנָּתֵשׁ֙ מַלְכוּת֔וֹ וְלַאֲחֵרִ֖ים מִלְּבַד־אֵֽלֶּה׃

(1) “In the first year of Darius the Mede, I took my stand to strengthen and fortify him.(2) And now I will tell you the truth: Persia will have three more kings, and the fourth will be wealthier than them all; by the power he obtains through his wealth, he will stir everyone up against the kingdom of Greece.(3) Then a warrior king will appear who will have an extensive dominion and do as he pleases.(4) But after his appearance, his kingdom will be broken up and scattered to the four winds of heaven, but not for any of his posterity, nor with dominion like that which he had; for his kingdom will be uprooted and belong to others beside these.

(א)הנה עוד שלשה מלכים וגו'. רז"ל אמרו בסדר עולם זה כורש ואחשורוש ודריוש שבנה הבית ומה ת"ל רביעי רביעי למדי, אבל בספר יוסף בן גוריון כתוב שהיה לו בן לכורש שמלך תחתיו לפני מלוך אחשורוש ושמו במבישה: (ב)וכחזקתו. של דריוש: (ג)בעשרו יעיר. את כל מלכותו להלחם עם מלכות יון:

(א) פרק ל

...רבי יוסי אומר מלכות פרס בפני הבית ל"ד שנה, מלכות יון מאה ושמונים מלכות בית חשמונאי מאה ושלש, מלכות הורודוס מאה ושלש, מכאן ואילך צא וחשוב לחרבן הבית, ובגולה כותבין בשטרות למנין יוונים אלפא, ואלו הן שמונה מלכי יון, אלכסנדרוס מקדון, פירטון, שלימון, סליקס, סנטרוק, אנטיוך, אנטיוכס, גסקלגס, מפולמוס של אסוירוס פול עד פולמוס של אספסינוס שמונים שנה, אלו בפני הבית, מפולמוס של אספסינוס עד פולמוס של טיטוס כ"ד, ומפולמוס של טיטוס עד מלחמת בן כוזיבא (י"ו) [כ"ו] שנה, ומלחמת בן כוזיבא ב' שנים ומחצה (כ"ב) [נ"ב] שנה אחר חרבן הבית

Rav Shimon Schwab provides a chart for the potential kings to whom Daniel (and Ezra) was/were referring:

מכדי בית שני כמה קם ארבע מאה ועשרים ארבע

Now, for how many years did the Second Temple stand? It stood for 420 years. Four hundred

- The Second Beis Hamikdosh was BUILT IN in AROUND 352 BCE.
- Adding 70 years between the destruction of the First Temple and the construction of the Second Temple, it follows that the First Temple was destroyed in around 422 BCE.
Avodah Zara 9a
מלכות פרס בפני הבית שלשים וארבע שנה מלכות יון בפני הבית מאה ושמונים שנה מלכות חשמונאי בפני הבית מאה ושלש מלכות בית הורדוס מאה ושלש מכאן ואילך צא וחשוב כמה שנים אחר חורבן הבית
The Persian Empire, which ruled the world before the construction of the Temple, continued to do so for 34 years in the presence of the Temple, i.e., after the Temple was built; the Greek Empire ruled for 180 years in the presence of the Temple; the Hasmonean dynasty ruled for 103 years in the presence of the Temple; and the Herodian dynasty likewise ruled for 103 years. From this point forward, you can go and calculate the date on which an event occurred by how many years it happened after the destruction of the Temple.
And Now - - -The PROBLEM.....
MIT.EDU
http://web.mit.edu/persian/5-2008/www/WWWFILES/MiscellaneousFiles/PersianEmpire.htm
As with the Medes, I give the much more widely recognized Greek transcriptions of these names in parentheses, where I have them available.
Kurush (Cyrus the Great)
Kambujiya (Cambyses) II
Smerdis the Usurper
Darayavahush (Darius) I the Great
Xshayarsha (Xerxes) I the Great
Artabanes
Artaxshassa (Artaxerxes) I Longhand
Xshayarsha (Xerxes) II
Sogdianos
Darayavahush (Darius) II the Bastard
Artaxshassa (Artaxerxes) II the Mindful
Artaxshassa (Artaxerxes) III
Arsha (Arses)
Darayavahush (Darius) III
550-529
529-522
522
522-486
486-466
466-465
465-425
425-424
424-423
423-404
404-359
359-338
338-336
336-330
MACEDON
Alexander
Philip
Antigonus One-eye
330-323
323-316
316-312 d. 301
SELEUCID
Seleucus I
Antiochus I Soter
Antiochus II Theos
312-280
280-261
261-246
Plato, Alcibiades I 123C
[123c] and many other fine and fertile regions reserved for the adornment of the consort; and each of these regions was named after some part of her apparel. So I imagine, if someone should say to the king's mother Amestris, who was wife of Xerxes, “The son of Deinomache1 intends to challenge your son; the mother's dresses are worth perhaps fifty minae at the outside, while the son has under three hundred acres at Erchiae,2
Without getting into all the minutia here, suffice it to say that based on the above -and much more evidence -the Second Beis Hamikdosh was not built in around 350BCE...but rather about 515BCE!
Which mean it did not stand for 420 years...but more than 580 years!!!!
It is not just the Seder Olam, many Gemaras and Bareisas etc that all place Beis Sheni's timeline at 420 years...there are many other allusions...
Before reading this next Gemara keep in mind that according to Pirkei Avos Shimon HaTzadik lived around the time that Beis Sheni was first erected:

...והתניא בעשרים וחמשה [בטבת] יום הר גרזים [הוא] דלא למספדיום שבקשו כותיים את בית אלהינו מאלכסנדרוס מוקדון להחריבו ונתנו להם באו והודיעו את שמעון הצדיק מה עשה לבש בגדי כהונה ונתעטף בבגדי כהונה ומיקירי ישראל עמו ואבוקות של אור בידיהן וכל הלילה הללו הולכים מצד זה והללו הולכים מצד זה עד שעלה עמוד השחרכיון שעלה עמוד השחר אמר להם מי הללו אמרו לו יהודים שמרדו בך כיון שהגיע לאנטיפטרס זרחה חמה ופגעו זה בזה כיון שראה לשמעון הצדיק ירד ממרכבתו והשתחוה לפניו אמרו לו מלך גדול כמותך ישתחוה ליהודי זה אמר להם דמות דיוקנו של זה מנצחת לפני בבית מלחמתיאמר להם למה באתם אמרו אפשר בית שמתפללים בו עליך ועל מלכותך שלא תחרב יתעוך עובדי כוכבים להחריבו אמר להם מי הללו אמרו לו כותיים הללו שעומדים לפניך אמר להם הרי הם מסורין בידיכםמיד נקבום בעקביהם ותלאום בזנבי סוסיהם והיו מגררין אותן על הקוצים ועל הברקנים עד שהגיעו להר גרזים כיון שהגיעו להר גריזים חרשוהו וזרעוהו כרשינין כדרך שבקשו לעשות לבית אלהינו ואותו היום עשאוהו יו"טאי בעית אימא ראויין לבגדי כהונה ואי בעית אימא (תהלים קיט, קכו) עת לעשות ליהוה הפרו תורתךחזן הכנסת נוטל ספר תורה ש"מ חולקין כבוד לתלמיד במקום הרב ...

...Wasn’t it taught in another baraita, in Megillat Ta’anit: The twenty-fifth of Tevet is known as the day of Mount Gerizim, which was established as a joyful day, and therefore eulogizing is not permitted.What occurred on that date? It was on that day that the Samaritans [kutim] requested the House of our Lord from Alexander the Macedonian in order to destroy it, and he gave it to them, i.e., he gave them permission to destroy it. People came and informed the High Priest, Shimon HaTzaddik, of what had transpired. What did he do? He donned the priestly vestments and wrapped himself in the priestly vestments. And the nobles of the Jewish People were with him, with torches of fire in their hands. And all that night, these, the representatives of the Jewish people, approached from this side, and those, the armies of Alexander and the Samaritans, approached from that side, until dawn, when they finally saw one another.When dawn arrived, Alexander said to the Samaritans: Who are these people coming to meet us? They said to him: These are the Jews who rebelled against you. When he reached Antipatris, the sun shone and the two camps met each other. When Alexander saw Shimon HaTzaddik, he descended from his chariot and bowed before him. His escorts said to him: Should an important king such as you bow to this Jew? He said to them: I do so because the image of this man’s face is victorious before me on my battlefields, i.e., when I fight I see his image going before me as a sign of victory, and therefore I know that he has supreme sanctity.He said to the representatives of the Jewish people: Why have you come? They said to him: Is it possible that the Temple, the house in which we pray for you and for your kingdom not to be destroyed, gentiles will try to mislead you into destroying it, and we would remain silent and not tell you? He said to them: Who are these people who want to destroy it? The Jews said to him: They are these Samaritans who stand before you. He said to them: If so, they are delivered into your hands to deal with them as you please.Immediately, they stabbed the Samaritans in their heels and hung them from their horses’ tails and continued to drag them over the thorns and thistles until they reached Mount Gerizim. When they arrived at Mount Gerizim, where the Samaritans had their temple, they plowed it over and seeded the area with leeks, a symbol of total destruction. This was just as they had sought to do to the House of our Lord. And they made that day a festival to celebrate the salvation of the Temple and the defeat of the Samaritans.It is apparent from the baraita that Shimon HaTzaddik wore the priestly vestments even outside the Temple. This would seem to be in contravention of the ruling of the other baraita prohibiting this. The Gemara resolves the contradiction: If you wish, say Shimon HaTzaddik did not wear a set of genuine, sanctified priestly vestments; rather, he wore garments that were fitting to be priestly vestments in that they were made of the same material and design. And if you wish, say instead that he indeed wore a set of genuine priestly vestments, but in times of great need, such as when one seeks to prevent the destruction of the Temple, it is permitted to violate the halakha, as indicated by the verse: “It is time to act for the Lord, they have nullified your Torah” (Psalms 119:126).§ It was taught in the mishna: The synagogue attendant takes a Torah scroll and gives it to the head of the synagogue, who gives it to the deputy High Priest, who gives it to the High Priest. The Gemara suggests: Learn from here that honor may be given to a student in the presence of the teacher. Although the High Priest is considered everyone’s teacher and master, honor was nevertheless extended to other individuals without fear of impugning the High Priest’s honor...

MESORA VERSION
From the defeat of Bavel by Persia to the Greek period = 52 years
• These 52 years span 3 Persian +1 Medean king
• Second Temple was built in 351 BCE and destroyed in 69 CE = 420 years
• Second Temple period of 420 years = 34 Persian + 386 Greek/Hasmonean/Roman
• This year is 5776
ACADEMIC CONVENTIONAL CHRONOLOGY
• From the defeat of Bavel by Persia to the Greek period = 207 years
• These 207 years span 10 Persian kings
• Second Temple was built in 520 BCE and destroyed in 69 CE = 589 years
• Second Temple period of 589 years = 188 Persian and 401 Greek/Hasmonean/Roman
(Rabbi Manning)
WHAT FOLLOWS ARE SEVERAL APPROACHES:
Answer #1 -Rav Shimon Schwab:
I would suggest a number of proofs to Rav Schwab's novel teaching that perhaps Chazal hid these years so that we should not know when the year 6000 is:
A) That same Gemara of the timeline is the one that also teaches about the year 6000!

מלכות פרס בפני הבית שלשים וארבע שנה מלכות יון בפני הבית מאה ושמונים שנה מלכות חשמונאי בפני הבית מאה ושלש ...

תנא דבי אליהו ששת אלפים שנה הוי העולם שני אלפים תוהו שני אלפים תורה שני אלפים ימות המשיח בעונותינו שרבו יצאו מהן מה שיצאו מהן

The Persian Empire, which ruled the world before the construction of the Temple, continued to do so for 34 years in the presence of the Temple, i.e., after the Temple was built; the Greek Empire ruled for 180 years....

one of the Sages of the school of Eliyahu taught: The world is destined to exist for six thousand years. For two thousand years the world was waste, as the Torah had not yet been given. The next set of two thousand years are the time period of the Torah. The last set of two thousand years are the period designated for the days of the Messiah, but due to our many sins there are those years that have been taken from them, i.e., such and such years have already passed and have been taken from the two thousand years that are designated for the Messiah, and the Messiah has not yet arrived. Whenever a tanna taught this baraita, he would insert the number of years that was correct for his time.

B) Our Mesorah is clear, with names. Save for the Anshei Knesses HaGedolah for whom it is quite hard to give an exact chron. for. This allows space to hide.

(א) משֶׁה קִבֵּל תּוֹרָה מִסִּינַי, וּמְסָרָהּ לִיהוֹשֻׁעַ, וִיהוֹשֻׁעַ לִזְקֵנִים, וּזְקֵנִים לִנְבִיאִים, וּנְבִיאִים מְסָרוּהָ לְאַנְשֵׁי כְנֶסֶת הַגְּדוֹלָה. הֵם אָמְרוּ שְׁלשָׁה דְבָרִים, הֱווּ מְתוּנִים בַּדִּין, וְהַעֲמִידוּ תַלְמִידִים הַרְבֵּה, וַעֲשׂוּ סְיָג לַתּוֹרָה:

(1) Moses received the Torah at Sinai and transmitted it to Joshua, Joshua to the elders, and the elders to the prophets, and the prophets to the Men of the Great Assembly. They said three things: Be patient in [the administration of] justice, raise many disciples and make a fence round the Torah.

C) Finally, look who teaches about the danger of calculating the final days!:
Derech Eretz Rabbah 11:13
"רבי יוסי אומר, הנותן את הקץ אין לו חלק לעולם הבא"
D) A further proof, consider that Ezra, Nechemia and....Rav Yosi Ben CHalafta (as we saw from Yevamus 62 above) all came at times of great confusion for the Jews, and were all its 'rebuilders'.
Answer #2
Rabbi Hool, in an extremely detailed new book on the issues, argues from hundreds of academic sources that in fact much of the Persian period ran at the SAME TIME as the early Greek period. Thus the two time-scales run concurrently. Conventional Chronology has Alexander the Great defeating Darius III and ending the Persian Empire. In fact, Rabbi Hool argues that Alexander defeated Darius I and the Persian Empire limped on for many years after that. Thus many of the Persian kings referred to in the conventional records are far later than most people think. He claims that the Greek establishment manipulated the records to show the total destruction of Persia, perhaps for political reasons or with a religious agenda in order to discredit the prophecies of Daniel which also talk about the end of the Greek empire. It is generally accepted that records were subject to manipulation in the ancient world. Rabbi Hool’s suggestions are however speculative, but his evidence is thorough and it will be interesting to see if his work is subjected to academic analysis
(RABBI MANNING)
Answer #3
RAV YISROEL BELSKY -HASKAMA TO ABOVE VOLUME):
Answer #4
"Seder Olam’s goal may not be primarily to give a comprehensive and precise history of all time, but rather to use history as a tool for teaching. The book assumes that its readers were aware of history. Likely, they knew when exactly the Purim story happened. Given this, it does not need to match up with secular dating. On the contrary, its adjusting of chronology not only remains loyal to the literal sense of the canonized texts, it also yields two tremendous benefits – making Yetziat Mitzrayim be the point of reference for all Jewish dating, and (on a more subtle level) teaching an important lesson about Ge’ulah and the goals of the Jewish future, what needs to happen next."
Answer #5
The above thesis mirrors Rabbi Menachem Leibtag's:
"At first glance the year 312 BCE is not especially significant for Jewish history. The Vilna Gaon points out, though, that as per the Seder Olam calculation, 313 BCE (the effective “Year Zero”) is found to be exactly 1,000 years after Yetziat Mitzrayim (2448)! Because of Seder Olam, the Seleucid year was effectively sanctified. A document dated with this count to the 45th year, for example, suddenly became synonymous with 1,045 years since Yetziat Mitzrayim"
Answer #6
"We suggest that the Chachamim were concerned about the acceptance of the Mishnah. To ensure its unequivocal adoption, they wanted the completion of the Mishnah to occur approximately 2000 years after the start of the Torah period. In this way they were promulgating that the 2000 year interval sandwiched between Avraham at age 52 and the completion of the Mishnah represented the era of Torah, and that the Mishnah punctuated the end of this creative Torah period. It also meant that the amoraim who were to follow would not be included in the creative period of Torah. If this meant chronologically shortchanging the time of the Second Temple, so be it. The author of the chronology .... was Rebbe Yosi bar Chalafta, Rebbe’s teacher. The idea for the Mishnah did not start with Rebbe, but rather came to complete fruition with him"
#7
Rav Sadia in Maamer 9, Emuna V'Deos
I have found, then, that the advocates [of the Christian doctrine] had no other means [of supporting their theory] except the contention that an addition is to be made in the chronological calculation. They maintain, namely, that the government of the Persians over Palestine existed for a period of something like 300 years before that of the Greeks and that the number of their kings during this period was seventeen. However, I have refuted this contention on their part from the text of the book of Daniel itself, [pointing out] that it was impossible that between the time of the government of Babylon and that of the Greeks more than four Persian kings should have ruled over Palestine. ..... These are, then, the arguments that may be offered in refutation of the doctrine of the Christians, aside from the objections to be raised against their theory of the suspension of the laws of the Torah and those that might be urged against them on the subject of the Unity of God, and other matters, which cannot properly be presented in this book. The eight treatise has hereby been complete
Readers Should Please Note:We have NOT here include the Chazon Ish approach, which, to be frank, is the approach of this writer.