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

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Can one use a different date system at the beginning of the Ketubah?

The following is an excerpt in English translation from the beginning of a traditional Orthodox and Conservative ketubah taken from this site: On the ______day of the week, the _________day of the ...
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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
11 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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3answers
51 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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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 ...
5
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1answer
71 views

Why some biblical holidays don't occur on certain days of the week?

I looked on the Hebcal website to see when the Erev Pesach will occur in the future (and also looked at the past), but found out that it's never a thursdag or sunday, did the Erev Pesach ever was or ...
2
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3answers
121 views

Passover duplicates on Shabbat 2 years in a row

Passover fell this year on Shabbat which is rare. It also fell last year on Shabbat. Two years in a row is incredibly rare. The question is in two parts: when has this duplication taken place ...
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2answers
65 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, ...
2
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2answers
66 views

Is it possible to read from 5 Parshiyot on 1 Shabbat?

On a regular Shabbat, we read from 2 parshiyot when we have a communal Torah reading -- one parsha in Shacharit and the next at Mincha. When there is a double parsha at Shacharit (such as Tazria-...
2
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1answer
58 views

“Early” leap years [duplicate]

Mishneh Torah, Sanctification of the New Month 4:2 (Sefaria English translation with my modification on the word "Aviv"): עַל שְׁלֹשָׁה סִימָנִין מְעַבְּרִין אֶת הַשָּׁנָה. עַל הַתְּקוּפָה וְעַל ...
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2answers
121 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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2answers
121 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 ...
3
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1answer
76 views

How can Australia celebrate Pesach at the same time of year as other countries?

The Torah commands that we celebrate Pesach in the spring time so how can Australia celebrate Pesach at the same time of year as other countries? While I suspect the answer is that they celebrate at ...
0
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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
46 views

Names of the days of the week

What are the Jewish names for each of the week days?
5
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1answer
39 views

Parshat Ki Tisa on Shabbat Shekalim

According to my Artscroll Chumash, it appears that parshat Ki Tisa can not be the scheduled Shabbat reading on Shabbat Shekalim (I assume this because the potential maftir and haftarah readings listed ...
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2answers
469 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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0answers
50 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, ...
1
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1answer
81 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
84 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 ...
3
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1answer
169 views

Where is the source for assigning a pasuk to each year since creation?

I remember having been told that there are those who assign each of the 5845 pesukim in the Torah to each year since creation. This is from memory as I have not found the reference yet. Would anyone ...
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3answers
180 views

Mashiach in year 6000?

I have heard in various discussions that we have an idea that mashiach will come at the latest by year 6000. Is this a normative belief? Furthermore, is this a belief that is understood literally by ...
2
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1answer
59 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
51 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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1answer
90 views

Is there a zero year in the ancient Jewish calendar?

I have recently been informed that the ancient Jewish calendar does not count the year at the beginning of a century: no zero year. So for example 1999- 2001 is one year not two. This can be important ...
3
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1answer
165 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 ...
0
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1answer
136 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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2answers
826 views

Why do Jewish funeral homes tend to be the main supplier of Jewish calendars?

Perhaps, this question is too "trivial". It seems that Jewish funeral homes tend to be the primary "printer" and supplier of Jewish calendars. For decades, many yeshivot as well as shuls get the large ...
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1answer
88 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 ...
5
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1answer
166 views

Why was there a huge concern to assure that Hoshanna Rabbah is not on Shabbat?

This page lists 4 rules that may cause the first day of Rosh Hashannah to be postponed from being on the date of the molad Tishrei. One of the rules is: If molad Tishri occurs on Sunday, Wednesday,...
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1answer
225 views

What are these marks with the numbers designating the Jewish years on this calendar?

I can see that the Hebrew is Elul 775 to Tishrei 776. What are those marks prior to the Hay and the Vav?
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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
75 views

What is the real first month of the Jewish year?

The Torah passage explaining Rosh Hashana says: "In the seventh month, on the first day of the month, you shall have a rest-day, a day of remembrance, horn-blowing, and holy assembly. [...] The tenth ...
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0answers
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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
118 views

Why isn't Rosh Hashana on Elul 30 and Tishrei 1

When Rosh Chodesh is two days, it's on the 30th of the old month and the first of the new month. Rosh Hashana falls on the beginning of the new month of Tishrei. Why then is Rosh Hashana on Tishrei ...
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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
59 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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1answer
48 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
54 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 ...
1
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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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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 ...
7
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1answer
292 views

Where in tanach are the months named

In megilas esther the months of the year are called out by name. For example the 12th month is called adar. Is there anywhere else in tanach that months are referred to by name?
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2answers
121 views

Is there any significance to someone's non-Hebrew calendar birthday?

It is believed that there is a significance to one's Hebrew calender Birthday. Is there any significance for one's birthday on other calendars (such as the Gregorian calendar, as well as others)? It ...
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4answers
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History of Shabbat: how (or) did they count to align with 7th day of creation?

The Torah (Exodus 20:8-11) commands: ח: זָכוֹר אֶת יוֹם הַשַּׁבָּת לְקַדְּשׁוֹ: ט: שֵׁשֶׁת יָמִים תַּעֲבֹד וְעָשִׂיתָ כָּל מְלַאכְתֶּךָ: י: וְיוֹם הַשְּׁבִיעִי שַׁבָּת לַה' אֱלֹקיךָ לֹא תַעֲשֶׂה ...
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1answer
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Illustrated hilchot Kiddush Hachodesh

I remember seeing about 20 years ago a beautiful annotated commentary on Rambam's hilchos kiddush hachodesh, with extensive illustrations and calculations, explained according to both ancient and ...
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3answers
251 views

Why not two days of Rosh Hodesh, as we have two days of yontif?

The reason for two days of yontif (outside Israel) is based on uncertainty about the date due to distance from Jerusalem and time needed to travel to convey the news of when the month started. The ...
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0answers
86 views

5 Iyar vs. 10 Adar

In Jewish tradition, we generally commemorate the ends of wars rather than their beginnings (e.g./i.e. Chanuka, Purim). The commemoration of the rebirth of Israel as the Jewish homeland in the past ...
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2answers
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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
127 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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1answer
206 views

What will Lubavitchers do in 2052?

There's a Chabad-Lubavitch custom of reciting a psalm of T'hilim corresponding to one's age. That is, for example, in one's fourteenth year of life (e.g. on his thirteenth birthday), he says the ...