Questions tagged [calendar]

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

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1answer
165 views

What is the proper way to write the year when it is a year that ends in מנצפך?

When the year ends with one of the letters of מנצפך - for example 5780 - What is the correct way to write it תש"פ or תש"ף?
4
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1answer
52 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 ...
4
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1answer
67 views

Maleh month with Rosh Chodesh on Shabbos

Does our Jewish calendar contain a Maleh month with its first day starting on Shabbos (contain parts of six calendar weeks), and if yes, how often does it occur?
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2answers
188 views

Why do we do anything for Pesach Sheini?

According to my handy Luach, on Pesach Sheini, some people omit tachanun (I haven't looked into any source texts to see who does) and according to the Wikipedia page, some eat matzah but I'm wondering ...
4
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1answer
137 views

Why do Cheshvan and Kislev vary in length?

In general, Jewish-calendar months alternate in length: odd-numbered months have thirty days each and even-numbered months have twenty-nine. However, it is sometimes necessary for a year to have one ...
4
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1answer
102 views

When did the original names of the months change?

The Haftorah this past week mentions the second month using the name Ziv. The orignal names of the months are discussed here: First-Temple-Era names of the Hebrew months? When did the original names ...
4
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3answers
519 views

Is it ok to celebrate New Years Eve?

Is it ok to celebrate New Years Eve? Which (orthodox, not modox or non-orthodox) rabbinical authority was against it and which one was in favor of it (if such opinions exist).
4
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1answer
43 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 ...
4
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1answer
804 views

What is the significance of a Blood Moon in Judaism?

Is it true that the appearance of a Blood Moon is an omen in Judaism? And why it happens to be coinciding every time with a Jewish holiday since quite a while? I would like to know about the facts and ...
4
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2answers
256 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 ...
4
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1answer
108 views

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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1answer
76 views

Why do we need a separate celebration for Shushan Purim in walled cities?

Purim is celebrated on Adar 14 because that was the day the Jews rested after prevailing against their enemies. In walled cities, Shushan Purim is celebrated on the 15th because that was when the ...
4
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1answer
114 views

Why begin selichot on a Sunday rather than on a date?

We ashkenaz start selichot on a Sunday. Sunday is a day of the week. Usually we start events on a given day of a given month (e.g., rosh hodesh, rosh hashanna), or after a given number of days (e.g.,...
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75 views

Concerning the time when Esther must be read

The first Mishnah in Tractate Megilla says: מגילה נקראת באחד עשר, בשנים עשר, בשלושה עשר, בארבעה עשר, ובחמישה עשר--לא פחות ולא יתר. The Megilla is read sometimes on the 11th, 12th, 13th, 14th, ...
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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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What if two communities had two different Shabbat days?

Imagine this: One community, A, keeps Shabbat on what we identify as Saturday. However, another community, B, for whatever reason, actually keeps Shabbat on what we identify as Sunday. These two ...
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187 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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80 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 ...
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2answers
547 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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3answers
607 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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5answers
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Why do we count years from the date of Creation?

Why do we count years from the date of Creation? I intend two sub-questions here, of which the second is far more interesting, so please answer it: Whence did this tradition originate? Why do we ...
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2answers
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Mean Hebrew Year Length

I am researching the kings of Judah and Israel and realized that the Hebrew year and the Gregorian year may be different. I know the mean length of the Gregorian year (365.2425 days), but I do not ...
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4answers
165 views

Significance of 2 Teveis in Judaism [closed]

Is the 2nd day of the Month of Teveis significant in Judaism? Looking for answers as to what characteristics (historical, numerological or otherwise) that is commemorated by or significant to Judaism ...
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3answers
7k views

How do non-literalist Jews interpret the “year zero” in the Hebrew calendar?

As I understand, the Hebrew calendar is counted from the "date of creation". Currently you have the year 5774. In the Christian world there are some creationists who also believe that the world is of ...
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4answers
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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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3answers
285 views

How can there be 150 days in 5 months?

Bereshit 7:11 and Bereshit 8:3-4 says that Noah traveled in the Ark for exactly 5 months, and for exactly 150 days. The current Jewish calendar (or any other calendar for this matter) does not match ...
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1answer
104 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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3answers
297 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 commandments),...
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1answer
138 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?
3
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1answer
152 views

Selichos start: Ashkinazim vs. Sefardim

Why do Sefardim start saying Sleichos earlier than Ashkinazim?
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1answer
74 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 ...
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1answer
88 views

Personality traits of being born on certain weekdays

A few years ago I was reading that there are some teachings on the weekdays and their "personality" and also how it influences the person born on one of them. Could anyone help me to find more ...
3
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1answer
382 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?
3
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1answer
130 views

Why are some dates off by one day?

The Hebrew calendar works on a 19-year cycle of leap years and a 247-year cycle of varying types of years. This is discussed more fully in Shvili d'Rakia, printed in all Mishnayos containing Tiferes ...
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2answers
1k views

Hebrew Calender API/Library in PHP or Javascript to add days, month or years to Julian date

I have a web project where I need a function either server-side using php or client-side using javascript where I can pass in a Georgian date and have month(s) or years added to it according to the ...
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2answers
103 views

Was Yom Kippur ever on a Sunday?

As per this answer, since the fixing of the calendar (let's say, at the time of the gemara), Yom Kippur does not fall on a Saturday night. Leon Wieseltier, in his book "Kaddish" (page 102) tells of ...
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1answer
84 views

Why do Kisidran years only occur when starting on a Tuesday or non-leap Thursday?

A careful analysis of the Tur's calendar chart will reveal that the only time the months alternate throughout the entirety of the year (with the exception of Adar Aleph) is if Rosh HaShanah is a ...
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1answer
151 views

Donating to the poor ON Purim

In minyan this morning, the gabbai said that money given to the shul as matanot l'evyonim would be donated to a charity which will "distribute it to evyonim in Yerushalayim, on Purim." I live in the ...
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1answer
93 views

Seeking (a) web site(s) that discuss(es) Judaic calendar statistics

I am compiling a short shiur for my shul on Rosh Hashanna. I plan on discussing some items related to the Judaic calendar, with a focus on some statistics that I can eventually put into Excel and / or ...
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1answer
164 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
409 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 ...
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2answers
247 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
110 views

Agricultural events and the Jewish calendar

There are many dates in the Jewish calendar that are connected to agricultural events. They include: Shavuot is Chag Ha'Katzir, the Holiday of the Harvest - Shemot 23:16 Sukkot is Chag Ha'Assif, the ...
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2answers
136 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
237 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
296 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
158 views

Between Shemini Atzeres and the Shemoneh Esrei 9th blessing's prayer for rain

In the Shemoneh Esrei, the line "who makes the wind blow and the rain descend" is added to the Second Blessing from Shemini Atzeres. The request to "give dew and rain for a blessing" is not added to ...
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1answer
94 views

Was there any limit to the number of consecutive “full” (30 day) or normal (29 day) months during the time of the Sanhedrin?

When Sanhedrin existed, each month had to be sanctified by Sanhedrin after testimony of 2 witnesses (or automatically by Sanhedrin if no one appeared by the end of the 30th day.) Refer to Maimonedes ...
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2answers
107 views

Why isn't Shabat haGadol held on the 10th of Nissan?

Why is Shabat haGadol celebrated based on day of the week (Shabat) and not day of the month, if it happened on the 10th of Nissan? Most other days of commemoration in Judaism are celebrated by a day ...
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1answer
259 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 ...