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
2answers
95 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 ...
9
votes
2answers
51k views

When is the next shmita year (as of 5772)?

When is the next shmita year? Is there disagreement about which year? If so, which Jewish sects or traditions believe the shmita is in which years? If you specify years since creation, please also ...
9
votes
4answers
254 views

Getting a head start on Shnayim Mikra

(Inspired by this question) Can one get a head start on Shnayim Mikra? Would it count if someone either started early (perhaps during the weeks with no Sedra in Tishrei), or just had some spare time ...
7
votes
1answer
92 views

Getting a late start on being Maavir Sedra for the year

I remember hearing when I was younger that ואלה שמות - is Roshei Teivos V'Chayav A'dam L'haavir H'sedra S'htayim M'ikra V'echod T'argum. If someone who has not been Maavir Sedra so far this year is ...
3
votes
1answer
59 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
117 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
85 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
1k 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
2answers
157 views

Reasoning for doing/not doing mourning customs in second half of the omer

In my observation, most people observe certain mourning customs between the beginning of sefirat ha'omer and lag b'omer (such as refraining from shaving, listening to live music, etc.). Some people ...
3
votes
0answers
89 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 ...
15
votes
2answers
1k 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 ...
2
votes
0answers
57 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
153 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 ...
-1
votes
2answers
62 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 ...
1
vote
1answer
67 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
52 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 ...
9
votes
3answers
159 views

Counting the omer with doubt before the fixed calendar

Currently, according to a previous question on this site, we count the omer without doubt: "Today is the Xth day of the omer" because we have a fixed calendar, and because counting with doubt is ...
1
vote
1answer
86 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
vote
1answer
86 views

Last night *might* have been the first night of the omer. Right? [duplicate]

Possible Duplicate: Sefira Counting in Diaspora How do we count sefira with absolute certainty, as we do, and yet, in diaspora, we have a second seder and a second day of yom tov? Wouldn't ...
24
votes
3answers
610 views

The Fanatic Badge

Here on Mi Yodeya, one can earn the "Fanatic" badge for visiting the site for 100 consecutive days. Is it halachically possible to earn the fanatic badge in the Diaspora?
0
votes
1answer
46 views

The Book of Numbers and Passover

Why is LORD'S passover (Numbers 28:16) on the fourteenth day of the first month?
5
votes
6answers
386 views

Gematrias or Roshei Taivos for the year 5772

Looking for Gematrios of phrases and/or Roshei Teivos that are appropiate for the year 5772 (by adding up to either 5772 or 772, which is the accepted numerical abbreviation for the year after ...
5
votes
1answer
133 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 ...
5
votes
1answer
135 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
1answer
71 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 ...
2
votes
1answer
127 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 ...
4
votes
2answers
114 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 ...
2
votes
0answers
112 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 ...
3
votes
6answers
360 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?
13
votes
1answer
453 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 ...
8
votes
3answers
294 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?
5
votes
1answer
313 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 ...
9
votes
4answers
696 views

“Veadar” as the name of the extra month in leap years?

In older books and other publications that describe the Jewish calendar, it's quite common to see the extra leap month referred to as "Veadar." (One example is here.) But I have yet to hear that ...
3
votes
3answers
343 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?
2
votes
1answer
91 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?
1
vote
1answer
143 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 ...
3
votes
3answers
742 views

Why “hayom yom rishon”, not “echad”?

Rabbi Menachem Greenblatt (St. Louis, Missouri) mentioned at s'uda sh'lishis (Shabas parashas "Ki Setze" 5772) that the correct name for Sunday is echad b(a?)shabas, as is written in k'suvos and ...
1
vote
2answers
124 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 ...
0
votes
0answers
78 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 ...
4
votes
1answer
71 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 ...
0
votes
1answer
173 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 ...
13
votes
5answers
1k views

Nittle Nacht Meaning

What is Nittle Nacht? What does the name mean? What is its significance? Which Halachic authorities speak about it, and what do they say? What is the actual date for it? How is it effected this ...
4
votes
0answers
51 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 ...
4
votes
1answer
85 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 ...
2
votes
0answers
41 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, ...
4
votes
1answer
207 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 ...
3
votes
1answer
117 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 ...
2
votes
0answers
122 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
131 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
70 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?