Questions tagged [calendar]

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

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3answers
557 views

Why is the day of Rosh Chodesh announced before every month except Tishrei?

Why is Tishrei the only month not included in the custom of announcing the day(s) of Rosh Chodesh on the Shabbos before the month begins?
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2answers
490 views

Looking for a Niddah Calendar calculator

I am looking for a program that calculates the different significant dates for hilchos Niddah based on the information you give it. My criteria are as follows: Must be free Must be PC compatible (i....
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Time Parameters of Mishenichnas Adar Marbin B'Simcha

Is "Mishenichnas Adar Marbin B'Simcha" just for the month of Adar, and then you take a step down in simcha for Nisan? Or are you supposed to raise your level of simcha and stay there until Av, when ...
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4k views

How long does one say Kaddish for a parent?

For example, if one's parent died on 1 Nissan, and was buried on 2 Nissan, what is the last day on which kaddish would be said for them?
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216 views

Illustrated hilchot Kiddush Hachodesh

I remember seeing about 20 years ago a beautiful annotated commentary on Rambam's hilchos kiddush hachodesh, with extensive illustrations and calculations, explained according to both ancient and ...
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1answer
143 views

When was the last time when we had 4 consecutive leap years when Matot and Masei were read separately?

I noticed that the only times that parshat Matot and Mas'ei are read separately outside Israel is during a leap year when the first day of the previous Rosh Hashannah occurred on Thursday. This would ...
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1answer
114 views

Parshat Ki Tisa on Shabbat Shekalim

According to my Artscroll Chumash, it appears that parshat Ki Tisa can not be the scheduled Shabbat reading on Shabbat Shekalim (I assume this because the potential maftir and haftarah readings listed ...
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86 views

Counting years according to the solar calendar

I once heard there is an opinion in Rishonim (maybe Gaonim?) that says we count ones years of life according to the solar calender. So for example a boy would become bar mitzvah when he would turn 13 ...
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1answer
558 views

Rambam's method for calculating the conjunction of the moon (and sun)

I think I'm missing something basic here... The Rambam, in Hilchot Kiddush Hachodesh (6:3) says that the interval between one conjunction to the next is is 29 full days, 12 hours of the 30th day, and ...
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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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1answer
526 views

When do we change back the ark-cover etc from white to the rest-of-the-year colour?

When do we change back the proches (ark-cover) etc from white to the rest-of-the-year colour? I would have thought right after Simchas Torah or possibly Isru Chag?
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155 views

Why be happy Shushan Purim?

Rama (695:2) quotes from the Maharil (though I don't see it there): וחייב במשתה ושמחה קצת בב׳ ימים י״ד וט״ו and one must have a drinking party and joy, a little, on two days: the fourteenth and ...
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951 views

When and why did we start reading the Parshat Hashavua?

My question is twofold: When did we start reading a new parsha (torah portion) every week? Why did we start reading a new parsha (torah portion) every week?
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1answer
128 views

why 3 of punishment, 7 of consolation, 2 of repentance

As is well known (e.g. from Tosafos to M'gila 31:2 or from Shulchan Aruch Orach Chayim 428:8), we have three haftaros of punishment, followed by seven of consolation and then two of return (repentance)...
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716 views

Twelve Months of Mourning During a Leap Year

For those who are mourning a parent for the requisite twelve-month aveilus, would Adar 1 and Adar 2 count as two separate months towards the twelve? Or does one year mean a full year, i.e., from ...
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1answer
304 views

Tuesday and Friday nights

Bavli P'sachim 112:2 has a story of an angel of destruction who would work daily (see Rashash) until asked to quit. When she requested some time to work, the rabbi she was talking with allowed her ...
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2answers
138 views

Whats the importance of yartzeit?

What is the significance of the date of a yartzeit (anniversary of a death)? Is there anything really special about the anniversary of someone's death or is it just an emotional event - a chance to ...
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4answers
189 views

Why do we celebrate the 15th of Av?

The Talmud (Bab. Ta'anith 26b) tells us that the 15 of Av was a fantastically happy time celebrated with joyous festivals. Why? One reason given is that the traveling Israelites who left Egypt ...
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2answers
375 views

What are the 14 types of Jewish Years?

As a way of explanation, I'm working on Objective-C code that calculates parashat hashavua. Initially, I ported the Javascript offered by YYDL as an answer to this question. I've found that my port ...
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1answer
233 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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542 views

Why are the names of the Hebrew calendar months named after the Babylonian deities? [duplicate]

Why are the names of the Hebrew calendar months named after the BABYLONIAN DEITIES. Why was it allowed for the Jews during the Babylonian exile to name the Hebrew calendar months after the Babylonian ...
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1answer
133 views

How can Australia celebrate Pesach at the same time of year as other countries?

The Torah commands that we celebrate Pesach in the spring time so how can Australia celebrate Pesach at the same time of year as other countries? While I suspect the answer is that they celebrate at ...
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368 views

Why not say tachanun until 2 Cheshvan?

It's recorded in most siddurim I've used that some people have the custom to skip tachanun on Isru Chag (the day after Sukkos), and start again the day after, while others don't resume saying it until ...
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213 views

Why is Vayelech read twice in a year?

It is mechanically possible, like this year, that parshas Vayelech is actually read twice in one year - last year it was after Rosh haShanah on Shabbos Shuvah, and this year - together with Nitzavim, ...
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1answer
187 views

Aharon's and Miriam's Yahrtzeit

The Book of Numbers spans almost the entire 40 year period in the desert, documenting numerous events that occurred to the Jews as they wandered. I count only 5 dates mentioned in the text (listed in ...
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1answer
105 views

Salutations or greetings for the various Jewish holidays

Is it right to, and is there a particular salutation for most of the major holidays in the Jewish calendar? I have a couple of new friends who celebrate their Jewish faith, I was wondering if there ...
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1answer
194 views

Some years have a siman, what does it mean?

I saw on a calendar that each year has a siman, for example 5772 has the siman 517. Here are the simanim for the next few years: 5773: 203 5774: 1523 5775: 517 5776: 1217 Does anyone know the ...
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1answer
234 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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1answer
93 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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51 views

What is the significance of the fact that every month that has a Biblical holiday in it is a 30-day month?

Rosh HaShanah, Yom Kippur, and Sukkos are all in Tishrei, which has 30 days. Pesach is in Nissan, which has 30 days. Shavuos is in Sivan, which has 30 days. What is the significance of this fact,...
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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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257 views

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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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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309 views

First year counted from creation [duplicate]

What is the first year for which there exists a record of it being dated according to the currently used system that starts counting from creation?
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839 views

When Adar Begins we increase our Joy-משנכנס אדר מרבים בשמחה

משנכנס אדר מרבים בשמחה- When Adar Begins we increase our Joy (I know it is not in Shulchan Aruch or the Rambam) What is the practical application of it?
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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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1answer
500 views

Changing the day of Shabbos?

There are many arguments for calendar reform, one of which argues that we should set up the calendar so that every date always falls on the same day (Invariable Calendar) . If this Invariable ...
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582 views

Calculating Tekufas Teves

Although often associated with the Winter Solstice, Tekufas Teves is an independent date. How is Tekufas Teves, or the other Tekufos (?) determined?
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395 views

When was the last time the “Leap Year” postponement rule was used to delay the date of Rosh Hashannah?

This site explains that there are 4 rules that would cause Rosh Hashannah to be postponed 1 or 2 days after the date of Molad Tishrei. You can view all 4 rules on the web site, but rule 4 states: 4)...
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518 views

Halachically skipping Purim

There have long been 'legends' of various liberal figures in Judaism, including Yeshayahu Leibovitz (brother of Nechama Leibovitz) that would 'skip' Purim. On the 14th of Adar they would be sure to be ...
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190 views

Why do the Ashkenazim say Selichos for a minimum of 4 days before Rosh HaShana?

The Ashkenazim start saying Selichos a minimum of 4 days before Rosh HaShana? What is the reason of a minimum of 4 days?
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Mattanos Levyonim via Jerusalem organazations

Am I yotzeh if I (a non-Jerusalemite) give it to an organization in Jerusalem who gives it out on their Purim since a mitzvas Hayom on my purim?
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Where can I find a chart of the Mishna Yomit (daily Mishna learning)?

Where can I find a chart of the Mishna Yomit (daily Mishna learning) - either online or offline?
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476 views

What is the greatest number of holiday days falling on weekdays in a year?

This is a question that can easily come up for an observant Jewish person who works in the secular world and needs to calculate how many days of vacation he or she will need to take from work for ...
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494 views

When is Musaf said?

When is the Musaf said? I know it is part of the Shacharit service. I mean when as in what holidays, fast days, etc... Would you say it on Tisha B'av for example. If not, why? At the end of the ...
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203 views

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
134 views

When exactly in history did the Sages adopt the 24 hour day?

When exactly in history did the Chachamim adopt the 24 hour day? Our calendar goes by chalakim (which are sections of the amount of daylight), but when it comes to waiting a certain amount of hours ...
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1answer
116 views

Ulchaparat pasha in Chazarat haShatz

When "ulchaparat pasha" is said in the Chazarat haShatz of Rosh Chodesh, how should the amein of the tzibbur be handled? Should the amein from "velislichat avon" be deferred until after "pasha," or ...
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236 views

Shouldn't the flood have ended on the 18th of Cheshvan?

Inspired by this question: New date at sunset: question on Sifse Chachamim The Torah tells us that the Flood started the 17th of Cheshvan (Bereshit 7:11) and concluded the 27th of Cheshvan (Bereshit ...
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874 views

Mashiv HaRuach - V'Sain (veten) Tal Umatar

Why do we start saying Mashiv HaRuach on Shemini Atzeres yet we do not say V'Sain Tal Umatar until Dec 4 / Dec 5 (In Chutz L'Aretz)? Why should they not be on the same day when they are similar ...