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

learn more… | top users | synonyms (1)

3
votes
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 ...
2
votes
2answers
82 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 ...
5
votes
1answer
52 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 ...
6
votes
3answers
178 views

Is it permissible to write the English/secular date?

Is it permissible to write the secular/Christian date? Example: On a letter (bad example but you get what I mean). Some conceivable issues: We're told "this month (Nisan) shall be for you the head ...
1
vote
1answer
66 views

Churban Bayis Sheini Not on Tisha B'Av?

I recently heard that the destruction of the 2nd Temple was not actually on Tisha B'av, the date of the destruction of the 1st Temple, but that it was pretty close, so the rabbis had it commemorated ...
12
votes
2answers
662 views

How does one “add a year” in the Hebrew calendar?

I'm trying to support the Hebrew calendar in my Noda Time project, and need to support an operation of "add a year" - or more generally, answer the question of "Given an original date and a target ...
3
votes
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 ...
2
votes
0answers
33 views

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 ...
2
votes
2answers
82 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 ...
1
vote
1answer
56 views

Page numbers in sefarim

Is there a reason for pages in sefarim being numbered using Arabic numerals (e.g. 1, 2, 3…) in comparison with the Hebrew numeration using letters? What is the earliest source for Arabic numerals ...
3
votes
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 ...
1
vote
1answer
44 views

Why can the 1st day of Pesach never occur on Sunday in 2 consecutive years?

I am doing a lecture on the math of the Jewish calendar. I understand the concepts of the 3 types of year lengths - maleh, chaser and kesidrah - "full", "regular" and "deficient" years. I also ...
-1
votes
2answers
51 views

Why is Adar 1 30 days long?

The Talmud Ta'anit 6b says אין בין אדר הראשון לאדר השני אלא קריאת המגילה ומתנות לאביונים "There is no difference between the 1st Adar and 2nd Adar except for reading the Megillah and giving presents ...
25
votes
4answers
2k views

In a leap year, is the extra month Adar I or Adar II?

I'm implementing support for the Hebrew calendar in Noda Time, my date/time library for .NET. I think I'm mostly there aside from text support (although beta testers would be very welcome!) but one ...
0
votes
1answer
41 views

The Book of Numbers and Passover

Why is LORD'S passover (Numbers 28:16) on the fourteenth day of the first month?
0
votes
2answers
141 views

Creation of State of Israel and birth of Abraham - 1948

According to the Jewish calendar, Abraham was born on the year 1948. The state of Israel was declared in 1948 according to the secular calendar. Is there any significance to this or is it just ...
0
votes
0answers
19 views

Trying to get Shmita year dates without a headache [duplicate]

I would like to know the shmita dates starting from 5775-5733. example:5775 (25 Sept 2014 - 13 Sept 2015)
1
vote
0answers
25 views

May the Jewish year be abbreviated in legal documents?

In conjunction with this question I would like to know if the popular abbreviation for the Jewish year 5774 commonly written as תשע״ד may be used in legal documents and if so why.
1
vote
1answer
55 views

Why do we abbreviate the Jewish year to the hundreds column?

The current Jewish year is 5774 however it is popularly abbreviated as 774 - תשע״ד. I would like to know why this abbreviation was adopted. I realize that to write out the number 5,000 would require ...
5
votes
2answers
677 views

If Yom Kippur hypothetically fell on Sunday, would you make havdalah?

I was curious about this hypothetical situation. If Yom Kippur would fall on Sunday, Motzei Shabbat, so immediately when Shabbat ends, Yom Kippur starts. Would there be some sort of separation, בין ...
2
votes
1answer
54 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 ...
6
votes
0answers
91 views

“לְחֹדֶשׁ שְׁנֵים עָשָׂר” in al hanisim on purim this year

As I was reading Al Hanisim this year, something odd struck me "לְחֹדֶשׁ שְׁנֵים עָשָׂר" - the 12th month. What struck me was that this year is a leap year so we actually celebrated Purim in the ...
2
votes
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 ...
5
votes
2answers
113 views

Why did Hashem create the world in such a way that a leap year is needed?

I understand why we have a leap year; to keep the sun and moon cycles in sync, so that Pessach is always in the spring. That's all technical, as a result of the moon orbiting too slowly - or the sun ...
11
votes
1answer
345 views

Why is Purim on Adar II during a leap year?

On a leap year, when a second Adar is added, we celebrate Purim on the second Adar. I would think it should be celebrated on the first Adar, since the Megillah goes out of its way in several places to ...
4
votes
1answer
102 views

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 ...
2
votes
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?
8
votes
3answers
186 views

“When Adar Comes We Increase in Joy” - already from Adar I?

Does the Talmudic dictum משנכנס אדר מרבין בשמחה (When Adar comes we increase in joy) start even in אדר ראשון (Adar I) in a leap year?
1
vote
1answer
93 views

Is Jewish birthday the same every lunar year

I understand the Jewish birthday is calculated on the lunar year, which could cause the birthday to drift back and fourth along the lunar calendar. But supposing the child was born, say, first day of ...
4
votes
0answers
41 views

Parshas Zachor before Purim?

Prior to the story of Purim was there a special yearly reading of Parshas Zachor? At which point in history was it instituted to read Parshas Zachor before Purim?
0
votes
0answers
62 views

What calendar-dependent laws must non-Jews follow?

While the calendar is vastly important in Judaism, it seems like it is barely applicable to non-Jews. The "big seven" Noahide laws seem to be perenially applicable; they dictate general rules for life ...
0
votes
1answer
104 views

Can one say kaddish for a gentile?

We are inclined to say kaddish on the yahrzeit of a very dear friend who was not Jewish, just as we would for a relative. Is there a reason not to? I am also interested to hear reasons why this is a ...
4
votes
1answer
61 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 ...
2
votes
1answer
120 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 ...
4
votes
0answers
46 views

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 ...
5
votes
1answer
115 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 ...
4
votes
1answer
72 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 ...
1
vote
2answers
99 views

How often does chanukah start before v'tain tal?

Outside of Israel, we start saying "v'tain tal oomatar livrachah" ("and provide dew and rain for a blessing") in the amida on the evening of December 4th or 5th (depending on the year). Chanukah ...
5
votes
3answers
546 views

Google says it is the Jewish Year 5774. The wiki says Judaism is 3000 years old. How is this discrepancy reconciled?

Google says it is the Jewish Year 5774. The wiki and other sources say Judaism is 3000 years old and suggest Abraham was born 4000 years ago. Where is the discrepancy? I am perhaps looking for an ...
4
votes
0answers
92 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?
2
votes
0answers
33 views

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, ...
7
votes
0answers
95 views

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 ...
2
votes
0answers
90 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 ...
1
vote
2answers
98 views

Is there proof that we never skipped a day of the week? [duplicate]

Bereshit begins with the first 6 days and the Shabbat. The assumption is then that after that day, Mankind kept track of the day of the week all by themselves until today. Are we sure that no one ...
6
votes
0answers
53 views

Historical Calendar Records

Are there any records of the Beis Din's decisions regarding the Hebrew Calendar (e.g. to add months, how long the month would be), before Hillel Hakatan established the fixed calendar?
3
votes
1answer
96 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 ...
3
votes
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.
4
votes
2answers
262 views

When exactly should an avel (mourner) not be davening before the amud?

An avel (mourner) if possible should also daven before the amud (be the chazan) on weekdays. But certain times of the year especially when tachanun is not said (but not every time) he should not be ...
5
votes
1answer
94 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, ...
1
vote
0answers
79 views

Why can we do Tashlich until Hoshana Rabba

One of the reasons to do Tashlich, according to Chabad.org is: "Another reason for saying Tashlich next to a river is because Rosh Hashanah is the day when we coronate G‑d as King of the Universe. ...