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

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7
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1answer
162 views

“לְחֹדֶשׁ שְׁנֵים עָשָׂר” in the Megillah and Al Hanisim

As I was reading Al Hanisim this year, something odd struck me "לְחֹדֶשׁ שְׁנֵים עָשָׂר" - the 12th month. What struck me was that this year is a leap year so we actually celebrated Purim in the ...
8
votes
4answers
198 views

Why did Hashem create the world in such a way that a leap year is needed?

I understand why we have a leap year; to keep the sun and moon cycles in sync, so that Pessach is always in the spring. That's all technical, as a result of the moon orbiting too slowly - or the sun ...
7
votes
1answer
256 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?
4
votes
1answer
53 views

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 ...
2
votes
1answer
84 views

During Purim Meshulash, why does the Seudah take place on Sunday?

When Shushan Purim falls on Shabbat, residents of Jerusalem spread the observances of Purim over three days: Megillah reading & meshloach manot on Friday, Al HaNissim and Purim Torah reading on ...
0
votes
3answers
425 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 ...
6
votes
4answers
105 views

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 ...
1
vote
2answers
685 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 ...
-2
votes
1answer
4k 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 ...
7
votes
2answers
172 views

Why celebrate Lag Ba'Omer on the 33rd according to the MaHaRIL?

There are several different opinions about when the students of Rabbi Akiva died, and which days we mourn for them. Sefer HaToda'ah quotes the Maharil, who says that the students of Rabbi Akiva died ...
3
votes
0answers
81 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 ...
7
votes
1answer
96 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 ...
6
votes
3answers
616 views

Why still keep two days of Yom Tov outside of Israel?

Why do we continue to keep two days of Yom Tov outside of Israel? The reason for two days was revelant during the temple era as we needed two witnesses to see the new moon. But today, with no Temple ...
3
votes
2answers
118 views

Birchas Illonos questions

From when until when are you allowed to make the bracha,and what is optimum?
3
votes
2answers
49 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 ...
1
vote
1answer
75 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 ...
2
votes
1answer
72 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?
1
vote
0answers
112 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 ...
15
votes
3answers
354 views

Is it heresy to follow secular dating on the destruction of the first Temple?

There is a discrepancy between rabbinic and secular sources regarding when the first Temple was destroyed -- a difference of some 165 years or so, which are called the "Missing Years." My question is ...
1
vote
1answer
75 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 ...
6
votes
0answers
72 views

Is Shushan Purim observed (in theory) in Shush, Iran?

Shushan, Achashveirosh's capital, is identified with the modern Iranian archaeological site of Susa. A city, Shush, has been established nearby. In modern-day Shush, (if any Jews lived there), what ...
1
vote
1answer
49 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 ...
31
votes
4answers
3k views

In a leap year, is the extra month Adar I or Adar II?

I'm implementing support for the Hebrew calendar in Noda Time, my date/time library for .NET. I think I'm mostly there aside from text support (although beta testers would be very welcome!) but one ...
3
votes
1answer
99 views

Why are the rules for parsha “catch up” different for leap vs. non-leap years? [duplicate]

When Pesach is on Shabbat, as it is this year and next, the Torah reading in Diaspora is a week behind the reading in Israel for a few weeks. This is because on the 8th day of Pesach which is on ...
1
vote
0answers
34 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., ...
1
vote
0answers
44 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 ...
3
votes
0answers
51 views

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 ...
6
votes
0answers
35 views

tehillim division not equal lengths

What is the logic behind the unequal divisions of Tehillim into days of the month; the sections are of very varying lengths i.e. the "longest days" are twice the length of the "shortest days?"
9
votes
2answers
201 views

Is there a best time of year to make aliya?

If one has decided to make aliya, are there particularly good (or bad) times during the year to do so, beyond the desire to be there for chagim? Factors that seem relevant would include tax-related ...
3
votes
1answer
73 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 ...
8
votes
2answers
147 views

Why don't islands read the m'gila two days?

Bavli, M'gila 5 amud 2, cites a doubt as to when the m'gila is read in T'verya: on the fourteenth of Adar, as in most places, or on the fifteenth, as in a city walled since the time of Y'hoshua. The ...
1
vote
1answer
33 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 ...
9
votes
3answers
318 views

Is one allowed to make Kneidlach when the last day of Pesach is Shabbos?

According to those who eat Gebrotz only on the last day of Pesach, is one allowed to make Mazta balls when the last day of Pesach is Shabbos? On a normal year, one can cook and eat Gebrotz on the ...
-1
votes
1answer
34 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 ...
4
votes
1answer
70 views

Parshas Zachor before Purim?

Prior to the story of Purim was there a special yearly reading of Parshas Zachor? At which point in history was it instituted to read Parshas Zachor before Purim?
1
vote
3answers
103 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 ...
2
votes
1answer
45 views

Significance of 4 Teveis in Judaism

Is the 4th 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 ...
3
votes
4answers
144 views

Significance of 2 Teveis in Judaism

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 ...
4
votes
2answers
748 views

If Yom Kippur hypothetically fell on Sunday, would you make havdalah?

I was curious about this hypothetical situation. If Yom Kippur would fall on Sunday, Motzei Shabbat, so immediately when Shabbat ends, Yom Kippur starts. Would there be some sort of separation, בין ...
0
votes
1answer
100 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 ...
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2answers
188 views
24
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8answers
635 views

Birthdays in Judaism

Is there any significance in Judaism attached to the day someone was born (aside for the 13th year)? Is there anything wrong with celebrating one's birthday? And is it more correct to celebrate the ...
3
votes
3answers
116 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).
0
votes
0answers
44 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 ...
6
votes
4answers
127 views

What's the point of a haftorah for Miketz if it's always Shabbat Chanukah?

I have heard that parshat Miketz always falls out on Shabbat Chanukah. If that's the case, why do chumashim print a haftorah for Miketz in addition to the one for Shabbat Chanukah? Should the Chanukah ...
2
votes
4answers
216 views

How often does Addar II happen?

I was sitting over dinner with the mispaha (family) talking about the calendar and I said that Addar 2 happens every seven years, but my dad said that it happens every four. So, my question is: how ...
2
votes
1answer
103 views

How do I write in Hebrew for a Ketubah, “On the first day of the week, the thirtieth day of Adar I in the year fifty-seven seventy one”

How do I write in Hebrew for a Ketubah, "On the first day of the week, the thirtieth day of Adar I in the year fifty-seven seventy one"? Question was asked by Stephen Spiegel, I'm just posting it ...
3
votes
2answers
200 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 ...
2
votes
1answer
154 views

Looking for a Niddah Calendar calculator

I am looking for a program that calculates the different significant dates for hilchos Niddah based on the information you give it. My criteria are as follows: Must be free Must be PC compatible ...
2
votes
1answer
180 views

Making up a synagogue calendar manually is tedious work. Which software can do the calculations automatically?

Lots of synagogues print up a customized calendar every year. (Sample.) Such a calendar includes shul-specific information (e.g. service times and maybe a weekly class or two) and general information ...