Questions tagged [calendar]

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

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2answers
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Declare a leap year due to coronavirus?

Today (23 March 2020) Israel's Supreme Court rejected a petition to declare this year a leap year so Pessah can be postponed for a month, and the seders don't have to occur during a lockdown (...
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1answer
88 views

How is the week referred when there is no parsha read that Shabbat?

Frequently, I have seen on wedding invitations and other correspondences that refer to a date using the parsha name for that week. E.g. an invitation to a wedding may say יום שני בשבת פרשת בא - The ...
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22 views

Why is there a different parshat calendar for those in diaspora compared to those in Israel? [duplicate]

According to hebcal.com, there is a parshat calendar for Israel, and a seperate one for Dispora. What is the difference and why are their two?
3
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1answer
118 views

Jewish and English birthdays [duplicate]

Can someone explain to me in simple language why my Jewish and English birthday are not on the same day this year. I will be 76 (4 time 19 ). My English is on Tuesday (today) and my Jewish one on ...
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2answers
47 views

Why does Adar signal additional joy?

There is an idea that once Adar comes in, we increase in joy. Why is this so? Nisan signals the Exodus and our establishing as a people. Sivan has the giving of the Torah. Kislev has the story of ...
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58 views

Is there any research available for the original 'Hebrew' 3rd & 5th month names?

I'm looking at a question that was posted here 7 years ago about the original name of the months. First-Temple-Era names of the Hebrew months? There is mention of a possible month called, "Tzach."...
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53 views

Is there any (relatively) simple way to calculate when/how often the Daf Yomi cycle will finish a tractate on Erev Pesach?

Shulchan Aruch O.C. 470:1 codifies that firstborns fast on Erev Pesach. In my experience, the widespread practice is for firstborns to attend a siyum of the completion of a tractate of Talmud, usually ...
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38 views

Veset Hachodesh when months are fixed following callendar

Nowadays we follow a calendar for month. Sometimes the Molad is Friday and they are 2 days of Rosh Chodesh Shabbat and Sunday. The dates are far from the astronomic dates. I am curious to know if ...
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2answers
135 views

Which event is more infrequent?

This year, we have a couple of infrequent events, and I'm trying to figure out which is less frequent, considering a 19 year cycle (which, I think, is the best time unit to use). Some of the data ...
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0answers
34 views

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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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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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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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 ...
3
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1answer
85 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 ...
3
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0answers
28 views

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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55 views

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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2answers
128 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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58 views

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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3answers
486 views

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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1answer
59 views

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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0answers
47 views

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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1answer
56 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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0answers
64 views

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
282 views

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
447 views

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
799 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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0answers
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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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2answers
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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 ...
4
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1answer
47 views

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 ...
5
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1answer
104 views

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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0answers
37 views

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
33 views

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 ...
3
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0answers
20 views

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
47 views

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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0answers
30 views

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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36 views

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 ...
4
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1answer
62 views

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
45 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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0answers
22 views

Why are agricultural requests based on holiday timing?

There are a few changes to the amida which reflect the changes in the seasons -- we add (or change to) mashiv haru'ach umorid hagashem (or geshem) at Shmini Atzeret (and back at Pesach) and switch TO ...
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0answers
31 views

Are anniversaries celebrated in Adar I or Adar II?

For those who celebrate anniversaries, or for calculating the end of Shanah Rishonah, if a couple gets married in Adar of a non-leap-year, when is the anniversary celebrated in a leap year? Is it in ...
5
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1answer
236 views

Longest Jewish year

This year, 5779, is the longest possible year on the Jewish calendar. Not only is it a leap year, but Cheshvan and Kislev both have 30 days, for a total of 385 days. How often does that happen?
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1answer
49 views

Is there any situation when the haftarah of Tetzaveh might be read during a non-leap year?

This past Shabbat, we read the haftarah of Tetzaveh. If I have calculated correctly, I don't think there is any situation where this haftarah would be read during a non-leap year. I think that ...
2
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2answers
239 views

Why do we have Adar I & Adar II- why don't we give the additional month a new name?

Building off the question of why Adar is chosen as the month to be doubled, why in a leap year do we have an Adar I and Adar II? Why wasn't the additional month given a brand new name?
1
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1answer
83 views

Jewish and Gregorian year's last digit

I've noticed that outside of the period between Rosh ha-Shana and 31 of December (included) the last digit of the current year in both systems is always the same, e.g. 5779 - 2019 What are the ...
10
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1answer
521 views

Why does the date for the prayer for rain change from one century to the next?

My due diligence: Praying for rain in the Diaspora How to calculate 60 days from tekufat tishri for any given year? On which evening should we start saying “V'tein tal u'matar li'vrachah”? I see ...
3
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0answers
146 views

On which evening should we start saying “V'tein tal u'matar li'vrachah”? (The ArtScroll siddur disagrees with The Book of Our Heritage.) [duplicate]

If a Jew lives outside of Israel, they should start saying "וְתֵן טַל וּמָטָר לִבְרָכָה" ("And give dew and rain for a blessing") during evening prayers on a certain evening in December. Various ...
5
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2answers
56 views

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 ...
2
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1answer
52 views

What does “in the month of Nissan” mean for postexilic Jews?

In Nehemiah 2:1 we read: "And it came to pass in the month of Nissan, in the twentieth year of King Artaxerxes..." What did the Jews in the postexilic era mean when they only mentioned the ...
2
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0answers
34 views

System of counting months in Noach

Going through Noach with the help of Rashi, there are 3 different systems of counting months. From (Tishrei|Nisan) 1 2 3 From (Kisleiv|Sivan) when the rain stopped From (Cheshvan|Iyar) when the rain ...

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