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

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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 ...
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1answer
123 views

When is Avraham's birthday?

I saw in a popular book a suggestion that Avraham was born on Rosh Chodesh Tevet. Does anyone have any backing sources for this?
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2answers
216 views

Correspondence between 365 negative commandments and days of the year?

There are 365 negative commandments which correspond to the days of the (solar) year (see Makos 23b; Tanchuma Ki Seitzeh 2). Apparently the prohibition of Gid HaNasheh (sciatic nerve) corresponds to ...
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4answers
713 views

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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1answer
191 views

Is is prefered to have the Pasach meal on the first or second night?

I remember being told that the Seder can be on either the first or second night. Is this true, and if so, is it prefered for it to take place on one over the other, or are they both equal? Edit: The ...
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1answer
162 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 ...
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3answers
105 views

Significance of 3 Teveis in Judaism

Is the 3nd 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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1answer
157 views

Was there a song about the year 5773 being special?

I recall as a kid hearing a tape with some song that went, "in the year tav-shin-ayin-gimel..." [5773], does that ring any bells? What was supposed to be special about that year?
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3answers
84 views

History of 9 Teveis

**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 personalities ...
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2answers
449 views

Does Passover occur on the first full moon after the equinox?

Christians claim that Jesus was put to death on Passover eve Nisan 14 they make the date for easter based on the first full moon after the spring equinox(paschal full moon) This year Passover is not ...
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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 ...
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4answers
66 views

Anyone know of an online prayer calendar?

I'm looking for an online calendar that gives daily basic prayer information. This calendar would be geared towards someone who needs to know when the prayers are out of the ordinary, or letting them ...
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2answers
56 views

How are parshas dealt with during the leap year's leap month? Also on haftorahs?

The Torah is divided into parshas and read each Shabbat. So during leap year, how is it handled? For haftorahs, same question. Also there are some parashas that are 2ndary to the main ones (...
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1answer
52 views

What are the most auspicious times of the Jewish year for contributing money?

What dates/months/seasons (or holidays) are considered most auspicious and/or customary for giving monetary gifts, such as tzedakah? I am aware from my own experience that Purim and erev Yom Kippur ...
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1answer
36 views

Based on Talmud Bavli Megillah 30a - 30b, how can we have a break betwen Parshiot Zachor and Parah?

According to what it says in the Talmud, the 3rd of the 4 Shabbatot is Parah, and the Talmud says that this 3rd Shabbat is the one immediately after Purim. In most years this is true. However, this ...
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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 ...
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1answer
83 views

What date was Kibrot Hattaavah?

Are there any sources that give the date for the incident in Kibroth Hattaavah recorded in B'Midbar Chapter 11? I am trying to figure out if it happened on a particular mo'ed or any significant date.
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2answers
60 views

Weekday Torah reading the same for two weeks when Yom Tov falls on Shabbat?

When Yom Tov falls on Shabbat, superseding the regular weekly Torah portion, does the Monday and Thursday weekday reading stay the same the week before and the week after the holiday? E.g., this year, ...
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1answer
177 views

When to do “missing” Nissan “Kel Maleh”?

During the month of Nissan, "Kel Maleh" - the prayer for the dead - is not recited. When is it more appropriate for the gabbai to recite it for people who have yahrtzeits during Nissan? Should he ...
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1answer
97 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 ...
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3answers
662 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 ...
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2answers
127 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 ...
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1answer
165 views

What was the first Hebrew date of the first Molad?

If one were to represent the Molad Tohu as a date, comprised of a month, day, year, hours, minutes, seconds, and chalakim, what date would that be?
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1answer
422 views

Virgo Constellation in the Torah [closed]

It is known that Elul is Besulah which in its secular name is Virgo where did this constellation come from according to our Torah sources?
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2answers
157 views

yushkas bris aniversary [closed]

Is it true that new years is the aniversary of yushka's bris
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1answer
38 views

History of 11 Teveis

**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 personalities ...
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3answers
49 views

Seeking additional information about the “seasonal drift” problem of the Judaic calendar

During my shul's annual *Tikun Leil Shavuot", I plan to give a short lecture about the "seasonal drift" affect of the Judaic calendar. See this Mi Yodeya answer for additional info. I could use some ...
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1answer
80 views

What is the source for observing Purim Katan?

As this year is a Judaic leap year, we shall be observing Purim Kattan ("little" Purim) on the 14 and 15 of Adar I (Feb. 24 and 25 on the Gregorian calendar.) (This holiday occurs every Judaic leap ...
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1answer
27 views

Earliest to do kapporos

What is the earliest date that you can do Kapporos? Is it rosh hashanah? (Note: I'm not asking for the best or most preferable time.)
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1answer
47 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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1answer
29 views

When do sefardim begin reciting selihot?

Since rosh hodesh Elul is a mini-holiday do you need to wait till the day after rosh hodesh or do sefardim begin saying selihot on the first of Elul?
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1answer
98 views

Is secular New Year tree considered OK?

this question presupposes that celebrating secular New Year's eve in the first place is OK. I looked here: " Is it ok to celebrate New Years Eve? " and the answers seemed not fully resolved, but my ...
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1answer
120 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 ...
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2answers
134 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 ...
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2answers
88 views

More info on tzerufei shemos (permutations of G-d's name) vis-a-vis months of the year?

I've seen some siddurim -- I think the Artscroll all-Hebrew Nusach Sefard -- that list one permutation of the name YKVK for each of the twelve months, and that one should have appropriate kavana when ...
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0answers
46 views

The story of the Minim and Boethusians; trying to fix the festival of Shavuot on Sunday

I've found different sources like the Mishnah, Babylonian Talmud (tractate Rosh HaShanah), Jerusalem Talmud, Tosefta etc., talking about the Minim and the Boethusians who wanted to fix the festival of ...
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46 views

Davening Riddle [closed]

With variations in the jewish calendar, how is it possible to daven maariv on nine consecutive nights and every shemoneh esrei is different from the other eight? Example: Thurs nite is a weekday, ...
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0answers
63 views

What factors were used for determining leap years while the Israelites were in the desert?

I am trying to "co-ordinate" Rambam"s explanation of how to determine Judaic leap years with a key verse in the Torah. Ranbam states in Mishneh Torah, Sanctification of the New Month 4:2: Mishneh ...
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47 views

Looking for a computer program or method to list all weekday / Shabbat no-El_Maleh days

My shul has asked me to compile an annual list of all days when "El Maleh" (prayer said for yahrtzeit) is omitted. People in my shul know that it is said any day the Torah is read, meaning Mon., ...
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70 views

On what days do we say shir hamalos before birkat hamazon?

Concerning saying shir hamalos before birkat hamazon, I have seen three different instructions in various bentchers: On days when we say musaf One days we do not say tachanun When we are celebrating ...
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0answers
53 views

Why are the daily tehilim divided as they are?

How were the daily starting and ending points for weekly and monthly readings of all of tehilim chosen? Are they just chosen to make them all approximately the same length, or are there specific ...
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0answers
66 views

Not making a wedding on the first 3 days of a month

I've heard there is a custom (practiced in various kehillas, I heard Belz is one of them) to not make a wedding on the first 3 days of a month (meaning alef, beis, or gimmel of a particular month.) ...
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0answers
27 views

Learn how to keep the feasts of Israel. [duplicate]

In preparation for celebrating my first Passover Seder I purchased a Hagadah and began researching online. I found an article saying there is a 13th lunar month this year because the barley wasn't ...
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0answers
45 views

Mishenichnas Adar marbin b'simcha [duplicate]

The Gemorah says in Taanis 29a משנכנס אדר מרבין בשמחה When Adar comes in one should increase in Simcha (Joy). What does this mean exactly? What should one do to "increase" ("marbin") in ...
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1answer
89 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 the ...
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1answer
87 views

What are the Jewish months exactly?

I am aware that the names of the months are derived almost directly from the Babylonian calendar and that the Chumash itself never mentions a month by name and instead refers to it by number. Later on ...
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3answers
57 views

History of 5 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
60 views

History of 10 Teveis

**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 personalities ...
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1answer
50 views

The Book of Numbers and Passover

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

History of 15 Teveis

**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 personalities ...