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

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Yakkov living in Egypt 17 years - connection to 210 years of servitude

Parshas Vayechi starts off that Yaakov lived in Egypt for 17 years. I was thinking that 17 years x 12 months = 204 months. Usually in 17 years there are 6 leap years which would increase the total ...
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94 views

What is a ger's birthday in terms of Jewish astrology? conversion date or birth date?

In terms of Jewish astrological signs and influences on people, per Kabbalah, would a ger use their actual 'birth' date or their date of conversion which is considered a rebirth?
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2answers
149 views

Why do we say Yizkor when we say it?

In the diaspora, we say Yizkor on: The last day of Passover The second day of Shavuot Yom Kippur The first day of Shemini Atzeret Why do we always say Yizkor on these days in particular? If it's ...
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6answers
279 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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3answers
292 views

Moshe Rabeinu's Yarzheit

It is common knowledge that Moshe Rabeinu was Niftar on 7 Adar. Was it a plain year with 1 Adar or a leap year with 2 Adars? If it was a leap year on what Adar was he Niftar?
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2answers
201 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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1answer
37 views

Splitting the Double Parshiyot

As far as I can remember, during the course of the year there are eight sets of parshiyot that are sometimes joined together: תרומה תצווה ויקהל פקודי תזריע מצורע אחרי מות קדושים בהר בחקותי חוקת בלק ...
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4answers
738 views

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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1answer
91 views

Minimum number of days in the first week of the Hebrew calendar?

Does the first week of Nissan have a minimum number of days? Or does it range from 1-7? If it does have a minimum (greater than 1 ..obviously), why?
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1answer
91 views

Selichos start: Ashkinazim vs. Sefardim

Why do Sefardim start saying Sleichos earlier than Ashkinazim?
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1answer
189 views

“B'shem Hashem” for 11 Tishre

Some call the eleventh of Tishre "b'shem Hashem" ("בשם ה׳"). (I assume this is a hasidic term, since, according to what I've heard, the name comes from the Baal Shem Tov.) Why is it called that?
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1answer
97 views

Altering the Spelling out the Hebrew Year

In 1983-1984, the Hebrew year was 5744. Normally, the year would have been spelled out in Hebrew letters תשמ״ד, but according to my rabbi then, Rabbi Phillip Rabinowitz, zt'l, as pronounced the word ...
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1answer
219 views

New Moon Based on Sighting Outside of the Land of Israel

I would appreciate someone directing me to a source that states/indicates/suggests whether the visibility of the new moon outside the Land of Israel may be used to begin the Jewish month in that ...
3
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1answer
135 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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2answers
132 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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2answers
87 views

Why isn't Hallel recited on VE Day?

There is a good deal of controversy about reciting Hallel on days not ordained by ancient tradition. But there are at least some opinions that Hallel should be recited to commemorate dates of ...
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1answer
160 views

Splitting Sefira Mourning Practices According to Rav Moshe Feinstein

People hold of the restrictions of the seven-week omer period (shaving and listening to music, for example) at various times: some hold approximately the first five weeks; others, approximately the ...
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2answers
95 views

Haftarah for yahrtzeit

If one's yahrtzeit falls on a day when there is a haftarah, there is a discussion about whether it's a bigger merit for the deceased to recite the haftarah on that day or before the day of the ...
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0answers
55 views

Cutting nails before Yom Tov

BSD I know that it says in Shulchan Aruch one shouldn't cut one's nails on Thursday (really two days before Shabbat) in deference to the Shabbos. Does this apply to Yom Tov as well? Meaning, should ...
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0answers
48 views

Where and when did the numerical time units (hours) originate? [duplicate]

The Torah states no numerical divisions for the day. The closest numeric we find is that there are 7 days in the week, and that the start of the "day" begins with "erev" (and there are debates on when ...
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1answer
77 views

Acronym for ה׳תש״ע [closed]

I know that every Hebrew year has one or more acronym for it. What acronyms do we use for the year ה׳תש״ע? Google is not helping me.
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Why do we use the Babylonian month names? [duplicate]

Possible Duplicate: Why use Babylonian calendar instead of our own? The Torah refers to the months of the near numerically, the names we employ for things like contracts, birkat hachodesh ...
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Shemonei Esrei regarding the seasons in Divine Might

Every time I pray the Amidah, I get very hesitant regarding what season is appropriate for me to pray. I live in the southern hemisphere in a tropical climate. Therefore, we have one season dry and ...
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Why is 1 Elul / 1 Tishrei the New Year for livestock?

The first Mishna in Rosh Hashanah says that 1 Elul is the new year for livestock, i.e. I can only tithe one year's "crop" of livestock at a time, so 1 Elul delineates the herds. (Update: we follow the ...
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3answers
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History of 2 Teveis

New Series **Looking for answers as to what happened in Jewish history on this date. It can include both positive and negative occurrences. It can also include birthdays or Yarzheits of well known ...
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2answers
135 views

Why is my molad-time chart off by a day?

The HaMaor Mikraos Gedolos chumash has a chart of molad (forecasted first visibility of the new moon in Jerusalem, based on averages observable to the naked eye, assuming Jerusalem local time; am I ...
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3answers
499 views

The 70 weeks in Daniel 9

How does one understand the 70 week prophecy in Daniel 9? When does the decree to rebuild Jerusalem take place, and how do you interpret the "seven weeks; and for threescore and two weeks" from that ...
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2answers
142 views

Significance of number 613 regarding the mitzvot

According to the Talmud (Makos 23b) "Moshe received 613 Mitzvos. They are 365 Lavim (negative commandments), corresponding to the days of the (solar) year, and 248 Mitzvos Aseh (positive ...
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1answer
106 views

What Hebrew date requires the most space to spell out in a Ketubah? [closed]

What Hebrew date requires the most space to spell out in a Ketubah?
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2answers
104 views

On which day in Teveis did this happen?

In Megilas Esther 2:16 it mentions that Esther was taken in Teveis to Achasverosh's palace. Does anyone know on which day of the month this happened?
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2answers
85 views

Secular Names for Days of the Week

Is there a problem using the secular names for the days of the week? If so, is it 1) because they originally come from Polytheistic gods or 2) simply because the people forbidding them are of the ...
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1answer
57 views

Where does 5774 fall in the 19-year cycle?

We are in a leap year, as indicated by the presence of Adar Bet. Leap years occur every third, sixth, eighth, eleventh, fourteenth, seventeenth and nineteenth years in the cycle. So how to tell ...
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1answer
59 views

When does the year start in terms of saying “Ulichaporas Pasha” for a leap year?

When we add the words "Ulichaporas Pasha" during Musaf of Rosh Chodesh when it's a leap year, when is the year determined - Nisan or Tishrei?
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2answers
103 views

Holocaust Rembrance Day(s)?

What is with the different Holocaust Remembrance Days? When I was a kid, my entire community observed Yom HaShoah. This came about approximately one week after Pesaḥ. Although I'm not totally sure, I ...
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1answer
69 views

When is the end of the Tishrei holiday “season”?

(Inspired by this question) I'm curious if there is any discussion on when the Tishrei holiday "season" officially ends. Just off the top of my head, I'm curious if anyone recommends refraining from ...
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2answers
171 views

How to calculate 60 days from tekufat tishri for any given year?

I'm trying to pin down an algorithm for calculating when to start saying ותן טל ומטר in diaspora. (In Israel it begins 7 Cheshvan.) I've gotten that we need to know how many centuries passed since ...
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2answers
134 views

In which month is it impossible to become Bas Mitzva? [closed]

In which month is it impossible to become Bas Mitzva?
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1answer
58 views

Eating new grains on the 17th vs the 18th of Nisan

The Shulhan 'Aruch (OC 489:10) states: אסור לאכול חדש אף בזמן הזה בין לחם בין קלי בין כרמל עד תחלת ליל יח בניסן ובארץ ישראל עד תחלת ליל יז בניסן "It is forbidden to eat new (grains) even ...
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1answer
84 views

What sources are there for the meaning of Yom HaMeyuchos (2nd Sivan)?

Ohr Sameach gives the chronology according to Rashi of the giving of the Torah. Early the following morning, the 2nd of Sivan, Moshe goes up Mt. Sinai for the first time. He is instructed to ...
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1answer
82 views

How do I write in Hebrew for a Ketbuah, “On the first day of the week, the thirtieth day of Adar I in the year fifty-seven seventy one”

Question was asked by Stephen Spiegel, I'm just posting it here as its own question instead of a comment.
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1answer
77 views

What is the Sod HaIbbur?

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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Did the people who followed the triennial cycle celebrate “Simchat Torah” in the same manner as those who followed the annual cycle?

I noticed this related question that briefly discusses Simchat Torah, but it mainly answers those that follow the annual cycle. People following the annual cycle clebrate Simchat Torah on a Yom Tov ...
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0answers
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Is there a reference that explains the literal meaning and etymology of the names of the Hebrew months?

Is there a reference that explains the literal meaning and etymology of the names of the Hebrew months? I am looking for something that explains both the common Babylonian names as well as the Tana"ch ...
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0answers
69 views

What are the months of Jewish civil and religious calendar?

I understand that Jewish religion has two calendars; one is Civil for Kings, childbirth, contracts etc. and second for festivals. what are the months of these calendars and how they are related ...
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1answer
121 views

Making up a synagogue calendar manually is tedious work. Which software can do the calculations automatically?

The year 2014 starts soon. Lots of synagogues print up a customized calendar every year. (Sample.) Such a calendar includes shul-specific information (e.g. service times and maybe a weekly class or ...
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Did Brit with rainbow happen in Kislev?

I read on torahvort.com in their article on Kislev that the Brit with Noach about the rainbow happened in Kislev. We know from the end of Ber 8:27 that Noach left the ark on the 27th of the 2nd month, ...
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0answers
91 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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The connection between Tishrei and Tevet

Can anyone steer me towards resources which explore a connection or relationship between Tishrei and Tevet (I assume, on a mystical level). Both months have a fast day on the 10th day and the full ...
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0answers
53 views

If a Beis Din Makes a Mistake When Calculating Kiddush HaChodesh, Does it Count?

On one hand, the Rambam says (in 2:10) Once the court sanctifies the new month, it remains sanctified regardless of whether they erred unwittingly, they were led astray [by false witnesses], or ...
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What is the date ending the 700 years mentioned in these midrashim?

Based on this answer I was able to have some extra fun reading over Shabbat. First, I would like to say, that I was amazed as to how much of the material I was allready familiar with, mostly from ...