Rosh Hashana 1:1 — Full Text
אַרְבָּעָה רָאשֵׁי שָׁנִים הֵם.
בְּאֶחָד בְּנִיסָן רֹאשׁ הַשָּׁנָה לַמְּלָכִים וְלָרְגָלִים.
בְּאֶחָד בֶּאֱלוּל רֹאשׁ הַשָּׁנָה לְמַעְשַׂר בְּהֵמָה. רַבִּי אֶלְעָזָר וְרַבִּי שִׁמְעוֹן אוֹמְרִים, בְּאֶחָד בְּתִשְׁרֵי.
בְּאֶחָד בְּתִשְׁרֵי רֹאשׁ הַשָּׁנָה לַשָּׁנִים וְלַשְּׁמִטִּין וְלַיּוֹבְלוֹת, לַנְּטִיעָה וְלַיְרָקוֹת.
בְּאֶחָד בִּשְׁבָט, רֹאשׁ הַשָּׁנָה לָאִילָן, כְּדִבְרֵי בֵית שַׁמַּאי. בֵּית הִלֵּל אוֹמְרִים, בַּחֲמִשָּׁה עָשָׂר בּוֹ.
אַרְבָּעָה רָאשֵׁי שָׁנִים: Four Dates, Four Domains
The Jewish calendar does not have one new year — it has four, each governing a distinct legal domain
Month 1 · Uncontested
נִיסָן
אֶחָד בְּנִיסָן
רֹאשׁ הַשָּׁנָה לַמְּלָכִים
New year for kings — royal regnal years are counted from Nissan
רֹאשׁ הַשָּׁנָה לָרְגָלִים
New year for the festivals — Pesach is first, Shavuot second, Sukkot third
Month 6 · Disputed
אֱלוּל
אֶחָד בֶּאֱלוּל
רֹאשׁ הַשָּׁנָה לְמַעְשַׂר בְּהֵמָה
New year for animal tithe — animals born before and after 1 Elul cannot be tithed together
ר׳ אֶלְעָזָר וְר׳ שִׁמְעוֹן: 1 Tishrei instead
Month 7 · Uncontested
תִּשְׁרֵי
אֶחָד בְּתִשְׁרֵי
רֹאשׁ הַשָּׁנָה לַשָּׁנִים וְלַשְּׁמִטִּין וְלַיּוֹבְלוֹת
New year for years, shemittah cycles, and yovel
לַנְּטִיעָה וְלַיְרָקוֹת
New year for saplings (orlah counting) and vegetables (ma'aser)
Month 11 · Disputed
שְׁבָט
אֶחָד בִּשְׁבָט
רֹאשׁ הַשָּׁנָה לָאִילָן
New year for trees — for purposes of ma'aser and orlah counting
בֵּית הִלֵּל: 15 Shvat (Tu BiShvat) instead
נִיסָן — הַיְּחִידִי שֶׁאֵין בּוֹ מַחְלֹקֶת: Nissan Stands Alone
Of the four new years, only 1 Nissan carries two functions — and only 1 Nissan is uncontested by any opinion
The Two Functions of 1 Nissan
For Kings
רֹאשׁ הַשָּׁנָה לַמְּלָכִים
Royal regnal years in Jewish law are counted from Nissan. Even if a king was crowned in Adar, once Nissan arrives his second year begins. This governed the dating of legal documents, oaths, and historical records tied to royal reign.
For the Festivals
רֹאשׁ הַשָּׁנָה לָרְגָלִים
The festival cycle is counted from Nissan: Pesach is the first regel, Shavuot the second, Sukkot the third. This ordering has legal implications — for vows ("until the festival"), for karet liability sequencing, and for the structure of the pilgrimage year.
Of the four new years, 1 Nissan alone carries no dispute. Elul is contested by R. Elazar and R. Shimon; Shvat is contested by Beit Hillel. Tishrei, though uncontested itself, is the date that R. Elazar and R. Shimon assign to maaser behema instead of Elul. Only 1 Nissan — with its double function — stands uncontested across all opinions.
הַמַּחְלֹקוֹת: Where the Opinions Divide
Two of the four new years are disputed — each with a clear halachic rationale for the alternative date
The Two Contested New Years
מַעְשַׂר בְּהֵמָה
Animal Tithe
Tanna Kamma
א׳ אֱלוּל
1 Elul — the animal tithe year begins in Elul, separating flocks born in different years.
R. Elazar & R. Shimon
א׳ תִּשְׁרֵי
1 Tishrei — align maaser behema with the general new year for years, avoiding a separate Elul cutoff.
רֹאשׁ הַשָּׁנָה לָאִילָן
New Year for Trees
Beit Shammai
א׳ שְׁבָט
1 Shvat — the beginning of the month marks the turn of the tree year for orlah and ma'aser.
Beit Hillel — Halacha
ט״ו בִּשְׁבָט
15 Shvat (Tu BiShvat) — by mid-Shvat most of the winter rains have fallen, marking the real turn of the tree's annual growth cycle.
הַמַּסְקָנָה — A Calendar of Domains
The opening mishnah of Rosh Hashana establishes something fundamental: there is no single Jewish new year — there are four, each governing a distinct legal domain. Kings are counted from Nissan, years from Tishrei, animals from Elul (or Tishrei), trees from Shvat (or its middle). Each domain has its own logic, its own threshold, its own consequences for tithes, vows, and legal documents. 1 Nissan anchors the most public domains — kings and festivals — and does so without dispute. It is the calendar's most unambiguous fixed point: the new year that everyone agrees on, for the obligations that touch everyone's life.