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

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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 ...
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2answers
64 views

History of 8 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
46 views

Why is Rosh Hashana two days in Jerusalem?

Rosh Hashana is the only festival celebrated for two days even in Jerusalem, since there was a possibility that witnesses for the new moon would come in the middle of the day and the Beis Din would ...
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1answer
36 views

History of 14 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
29 views

History of 12 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
45 views

Names of the days of the week

What are the Jewish names for each of the week days?
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1answer
134 views

247 year Jewish calendar cycle

I recently read on Matzav.com an article by Rabbi Dovid Heber discussing the 247 year cycle in the calendar. He mentioned that every 247 years the Hebrew calendar is exactly identical. Now in the ...
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1answer
956 views

When do we switch from Morid Hatal to Morid Hageshem and vice versa?

According to Shulchan Aruch, (please cite Saeef and Siman so I can read further): When do we switch from Morid Hatal to Morid Hageshem and vice versa? What about Barechenu and Barech Alenu? What ...
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1answer
37 views

History of 16 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
42 views

History of 13 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
62 views

History of 6 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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0answers
16 views

How did they count Sefirat Ha'omer in those areas when there was doubt, prior to our current calendar? [duplicate]

Following up on a comment from this answer excerpt: In conclusion, now that we have an established calendar and our celebration of two days Yom Tov is only due to the minhag of our fathers, as ...
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0answers
10 views

Outside Israel, why don't we count two days of the Omer consecutively? [duplicate]

Outside of Israel, we observe 2 days of Pesach because of keeping a custom that there initially was a doubt as to which day Pesach began. The mitzvah of Omer says that it begins "On the morrow of ...
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2answers
118 views

How to Reconcile if/when the Jewish Day Was to Begin at Sunset?

Question: Are there any historical documents that detail the differences in opinions on when the "Jewish Day" began? (Perhaps between Sadducee and Pharisee/Rabbinic definitions, etc). What the ...
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0answers
21 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 ...
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1answer
142 views

Question about Shemitah years etc [duplicate]

20/01/15 Trying to find out- --I know a "shemitah" is a 7 yr. period. What confuses me is this: how do we know what specific years are the "shemitah" (e.g. Sept./07 to Sept./14 or Sept./08 to Sept./...
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93 views

Menorah with uneven spacing

The following assumes lighting an additional candle for each day of Chanukkah: Two may light in a single Menorah for the first three days of Chanukkah; each in his end of the Menorah. This does not ...
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0answers
81 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 ...
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1answer
39 views

History of 7 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
48 views

Is it accurate to count down years in Ancient Jewish calendar? [closed]

Do we say that the smaller the number date for BCE calendar the more recent the year? Count backward to go forward? And is it true that from 1BCE to 1CE is one year?
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2answers
70 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 ...
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1answer
33 views

Why were leap years decided only by judges and not with the cooperation of witnesses?

Ramba"m Hilchot Kiddush Hachodesh 4:9 says: The year can be made full only by [judges] who were invited [to participate in the deliberations]. What is implied? The head of the High Court tells ...
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1answer
37 views

Pshat in Pasuk of Velo Yavor

Chazal say that the reason why we don't read the Megillah on the 16 is because the passuk (Esther 9:27) says "velo yavor" - וְלֹא יַעֲבוֹר. Why is there a need for this Passuk? The Megillah said that ...
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1answer
2k views

How did they use to count years in the time of Abraham? [duplicate]

Possible Duplicate: Rationalist Position on Bible Ancients' Long Lives The bible states that Abraham has lived for 175 years, Yishmael lived for 137 years, and so on and so forth. Now, ...
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2answers
195 views

What parsha is the most commonly read parsha? [closed]

Which Parsha has the most Kriyos Hatorah from it?
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1answer
7k views

What are the exact Shmita dates (in Gregorian) since 1900 or a general formula for determining the dates?

I know there are these two questions already (Trying to get Shmita year dates without a headache) and (When is the next shmita year (as of 5772)?); however, they don't appear to provide either a table ...
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0answers
35 views

Crossing the International Date Line too many times during Sefirah

The Lubavitcher Rebbe brought the chiddush (I don't know if everyone holds by it) that one must delay one's celebration of Shavuos by a day if one loses a day in the count as a result of crossing the ...
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1answer
81 views

How can traditional calendar be correct? [closed]

Traditional calendar has two Shabbats in a row. For example, Passover 2008 was preceded by Shabbat. 1st day of Passover is a Holy Meeting and it is called a shabbat too. Calendar can't have two miqra ...