Questions tagged [calendar]

Questions about calendars. The Jewish calendar is a lunisolar calendar that determines the dates of Jewish festivals.

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5
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1answer
301 views

What will happen when our set calendar ends?

In a recent conversation I was told that the current Jewish calendar was only set till the year 6,000. There was conjecture as to what will happen after that time (assuming Moshiach has not yet ...
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Why are Creation and the Mabul not commemorated independently?

Our calendar marks days and dates important to our existence but they all start from the Exodus from Mitzrayim which makes sense because A -- that's when we started fixing a calendar that related to ...
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1answer
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Importance of “Days” in the process of Creation

Why is it important that the Creation process is divided into 6 "days", as opposed to "parts" or "stages" or even presented in simple succession without mentioning "units"?
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Torah confusion between “daylight” and “a day”

The Torah uses the same word יום in the same verse to denote both "daylight" and "24 hours": וַיִּקְרָא אֱלֹהִים לָאוֹר יוֹם וְלַחֹשֶׁךְ קָרָא לָיְלָה וַיְהִי־עֶרֶב וַיְהִי־בֹקֶר יוֹם אֶחָד׃ ...
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Agricultural events and the Jewish calendar

There are many dates in the Jewish calendar that are connected to agricultural events. They include: Shavuot is Chag Ha'Katzir, the Holiday of the Harvest - Shemot 23:16 Sukkot is Chag Ha'Assif, the ...
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Holy days on the weekend [duplicate]

There are 13 holy days per year on which we must not work (outside of Israel): 2 Rosh Hashanah, 1 Yom Kippur, 4 Sukkot, 4 Pessah, 2 Shavuot. What are the minimum and maximum numbers of these days that ...
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Why is Pesach sheni one month after Pesach rishon?

Bamidbar 9:11 tells us that Pesach sheni happens a month after Pesach rishon. Pesach sheni was for the unclean or people on a long journey, who couldn't bring Pesach at its appointed time. Did they ...
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1answer
74 views

Source for adjusting the calendar for Lo Ad'u Rosh rule

There are 4 rules that would cause the postponement of the 1st day of Rosh Hashanna from being on the day of the molad. One of the most commonly implemented rules is called Lo Ad'u Rosh, meaning that ...
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1answer
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Idolatrous origin of the name TAMMUZ

The Gemmorah in [Jerusalem Rosh Hashana 6a][1] explains the process of adopting the Babylonian names on Months instead of Biblical ones. דא"ר חנינה שמות חדשים עלו בידם מבבל R'Hanina said: the ...
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2answers
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Why announce Mashiv Haruach and not Vtein Tal?

When we start saying mashiv haruach there is an important requirement of announcing the liturgical change. If one does not hear the announcement, one does not say mashiv until the community would have ...
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How do we know that the Judaic calendar should be primarily lunar based?

There is nowhere in the Torah that specifically mentions that the calendar cycle is to be based mainly on a lunar cycle. (I'm intentionally omitting the notion of the solar / seasonal influence of ...
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How does the Hebrew calendar work in areas with midnight sun? [duplicate]

There are two polar circles, the Arctic Circle and the Antarctic Circle. There are days North of the Arctic Circle, and south of the Antarctic Circle where the sun never sets (summer), or never rises (...
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4answers
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Is it heresy to follow secular dating on the destruction of the first Temple?

There is a discrepancy between rabbinic and secular sources regarding when the first Temple was destroyed -- a difference of some 165 years or so, which are called the "Missing Years." My question is ...
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Why were Mishmarot a concern in the Qumran calendar?

I'm researching various sources regarding the Qumran calendar. I don't understand why there was a concern for incorporating the 24 priestly "watches" (mishmarot) (Refer to I Chronicles 4 for the names....
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106 views

“Hanukkah 8th day/Tevet 3/New Years Day” triple coincidences - What makes them so Rare?

I very recently became aware that Hanukkah 8th day sometimes (but rarely) falls on Tevet 3. What causes this to happen? At the same time, I also noticed that when Hanukkah 8th day/Tevet 3 happen ...
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Are there any halachic sources that discuss the Qumran calendar?

As a Torah reader, I was fascinated when I visited Heichal Hasefer - "Shrine of the Book" and read about the Qumran society and their calendar. As far as I know, there doesn't seem to be much, if ...
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Time as a Spiral

@PixelArtDragon asked what rabbi originated the idea that time is a spiral. @PixelArtDragon said that the earliest they've found is Rav Natan Breslov who lived from 1780-1844 - can anyone locate that ...
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Historical Daf Yomi calendar

Is there a website that allows you to find what Daf was studied on the a particular date as part of the Daf Yomi cycle?
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Why doesn't our decrease of joy extend beyond Tish'a B'Av?

Citing from here There is a famous Mishnah that is cited towards the end of Masechet Ta’anit (4:6) that states: “Mishenichnas Av, Mema’atin Besimcha” “When the month of Av arrives, we ...
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1answer
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Adopting idolatrous Babylonian name of Month Tamuz

Jerusalem Rosh Hashana 6a דא"ר חנינה שמות חדשים עלו בידם מבבל R'Hanina said: the names of the Months were brought with them from Babylon The Gemmorah explains the process of adopting the ...
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What verses in Na"ch describe the details of Jewish calendar like Kidush HaChodesh and Ibbur Hashanah?

The Gemmorah in Jerusalem Rosh Hashana 6a explains the process of adopting the Babylonian names instead of Biblical ones. דא"ר חנינה שמות חדשים עלו בידם מבבל R'Hanina said: the names of the ...
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What is the Sod HaIbbur and what is so secret about it?

What is the Sod HaIbbur (secret of impregnation)? I have seen it discussed in many places including the Pirkeu D'Rebbi Eliezer (8th chapter?) in reference to the intercalation for the lunar months of ...
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1answer
52 views

How can I calculate the number of days in a Hebrew month in a given year [closed]

Shalom, I am creating some pastoral care software for synagogues. One feature is the tracking of anniversary dates of life events - simchas, yahrzeits, etc. For this, I allow the user to set a ...
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Birthdays in Judaism

Is there any significance in Judaism attached to the day someone was born (aside for the 13th year)? Is there anything wrong with celebrating one's birthday? And is it more correct to celebrate the "...
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Is there a book or online source explaining Jewish year-“type” sequences?

The current Judaic calendar allows for three types of year lengths: Chaser ("missing") - 353 days Kesidra ("in order") - 354 days Shalem ("full") - 355 days (Add 30 to each of the above for leap ...
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1answer
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Was there any limit to the number of consecutive “full” (30 day) or normal (29 day) months during the time of the Sanhedrin?

When Sanhedrin existed, each month had to be sanctified by Sanhedrin after testimony of 2 witnesses (or automatically by Sanhedrin if no one appeared by the end of the 30th day.) Refer to Maimonedes ...
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3answers
137 views

Significance of 3 Teveis in Judaism [closed]

Is the 3nd day of the Month of Teveis significant in Judaism? Looking for answers as to what characteristics (historical, numerological or otherwise) that is commemorated by or significant to Judaism ...
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4answers
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Why does the Torah give us exact dates for the flood?

This question asks why the flood didn't end on the 18th of Cheshvan (one year after the start). My question is more basic: why does the torah give us precise dates here at all? Bereishit 7:11 tells ...
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Why do we count years from the date of Creation?

Why do we count years from the date of Creation? I intend two sub-questions here, of which the second is far more interesting, so please answer it: Whence did this tradition originate? Why do we ...
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What did people say in Shemoneh Esrei and Kiddush of Shavuos when it didn't fall out on the 6th of Sivan?

During Shemoneh Esrei and Kiddush of Shavuos, we describe the Yom Tov as "this day of the holiday of Shavuos, the time of giving our Torah" (יום חג השבועות הזה זמן מתן תורתינו). Before we had a fixed ...
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2answers
791 views

Why was the calendar not arranged so that Yom Kippur never falls on Shabbat?

Our Sources give the impression that Shabbat is the holiest of the yamim tovim. On Shabbat, we rest, eat and drink of the best, sleep, rejoice, have sex with the spouse, wear nice clothes, etc. It ...
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Difference of leining between Israel and Chutz Laaretz in 5779 [duplicate]

As anyone may know, because the last day of Pesach in chutz laarets fall out on Shabbat we read the special parsha for the 8th day of Pesach while in Israel since it wasn't Pesach anymore, they read ...
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Parashas Shavua calculation

I'm writing a site where the user would be able to see the calendar with jewish-civil translation of dates, and also which parasas shavua falls on which Shabbos. I'd like to know what is the formula ...
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Did R' Akiva's students die in one year?

שנים עשר אלף זוגים תלמידים היו לו לרבי עקיבא מגבת עד אנטיפרס וכולן מתו בפרק אחד מפני שלא נהגו כבוד זה לזה Rabbi Akiva had twelve thousand pairs of students in an area of land that stretched from ...
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1answer
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Yahrzeit in different time zone

If a person passes away in one place but [some] relatives live in another place in which, due to time zone differences, it is already the next day (or still the previous), do those relatives establish ...
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0answers
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What was done with the orders of the cohanim during a leap year?

In 1 Chronicles chapter 24 David set out orders for the cohanim to serve in the Beis Hamikdash. What he established is intuitive for a 12 month year, but what was done in a 13 month year? If possible, ...
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1answer
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Sources for how many days of holidays are there per year?

Specifically, I am looking for a traditional source like the Baal Haturim. I overheard that a number that I don't remember, but basically like 49 days out of the year are holy days. Is there a mesorah ...
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4answers
671 views

Which Brachas are said only once a year?

I am looking for a list of Berachos/blessings that are recited a maximum of once per year. Which blessings (from prayer, Jewish rituals, or otherwise, by men or women) are recited only once per year?...
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For how long was there confusion about the date of a holiday?

The second day of Yom Tov outside of Israel was caused either by the length of time it took messengers to get to far away communities and tell them when the new month was declared or the confusion ...
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0answers
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Why Kaddish for a parent is said for eleven months?

This answer cites a source which explains that Kaddish for a parent is customarily not said for 12 months so as not to imply a parent's status as that of "wicked." Not wanting to label a parent ...
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3answers
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Secular Names for Days of the Week

Is there a problem using the secular names for the days of the week? If there is a problem, is it because: 1) The names originally come from Polytheistic gods OR 2) The people forbidding them are ...
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2answers
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Is there a difference between ירחים and חדשים?

As a word meaning "months," the word חדשים is used in Ber. 38:24 and then multiple locations after Sh'mot 12:2. יְרָחִים appears in Sh'mot 2:2, then (possibly) in Dev 33:14 and twice in Iyov. When ...
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Will the day of the final salvation be celebrated every year in the days of the Moshiach?

Following "what-berachos-should-be-made-when-moshiach-comes", I wondered, for all the great events that G-d did to us we set (in the Torah or Rabbinically) a yearly festive - celebrating the date - ...
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Colours for months

According inner.org, each month of the year has a corresponding colour to it. This does not seem to be in Sefer Yetzirah. What is the source for this and what is the significance with regards to each ...
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1answer
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Southern Birkas Ha'ilanos

I've seen Saying Mashiv HaRuach in the Southern Hemisphere. Similarly, is Birkas Ha'ilanos (ברכת האילנות) said in Tishrei in the southern hemisphere? That's when the trees bloom.
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The date of Amalek fighting Moses and Israel in the wilderness [duplicate]

וַיָּבֹא עֲמָלֵק וַיִּלָּחֶם עִם־יִשְׂרָאֵל בִּרְפִידִם׃ Amalek came and fought with Israel at Rephidim. (Ex 17:8) When exactly was it, what day was chosen to fight the Israelites and why that ...
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1answer
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Is there a limit to the number of consecutive leap years?

The Rambam in Hilchot Kiddush Hachodesh 4:5 (Thanks @DonielF) states that Sanhedrin was allowed to declare a leap year not just based on "seasonal alignment' (I.e. 16 Nissan should be after the spring ...
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2answers
40 views

What exactly do we celebrate on Purim - the 14th of Adar?

In the Purim timeline, we can see a series of beneficial events: the King couldn't sleep and remembered Mordechai (the turn of the story) Hanging of Haman with his sons and Appointing of Mordechai ...
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5 Iyar vs. 10 Adar

In Jewish tradition, we generally commemorate the ends of wars rather than their beginnings (e.g./i.e. Chanuka, Purim). The commemoration of the rebirth of Israel as the Jewish homeland in the past ...
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864 views

What's the point of a haftorah for Miketz if it's always Shabbat Chanukah?

I have heard that parshat Miketz always falls out on Shabbat Chanukah. If that's the case, why do chumashim print a haftorah for Miketz in addition to the one for Shabbat Chanukah? Should the Chanukah ...