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17
votes
4answers
779 views

Moshe's age and the timeline of the exodus

Moshe was 80 when he first approached Par'o and the makos lasted a year, so he turned 81 in the Adar before the Jews left Mitzrayim. As he turned 120 in the Adar before the Jews entered Israel, the ...
21
votes
10answers
774 views

How can I make a long summer shabbat a delight?

Where I live, shabbat ends at nearly 10PM at the peak of summer, and I find it challenging to get to the end of that without starting to develop some negative feelings. I try to spend most of Shabbat ...
14
votes
4answers
999 views

Time Travel and Judaism

Has time travel ever been discussed before in terms of Judaism? According to Judaism would (should) it be possible to travel through time?
17
votes
2answers
1k views

When did we start counting the Year since Creation?

This year is 5772 / תשעב (Taf-Shin-Ayin-Bet) on the Hebrew Calendar. What is the earliest reference to the Year counting from the Creation of the world?
11
votes
2answers
721 views

Wearing Watches on Shabbat

What is a watch one can wear on shabbat? There are the analogue quartz watches with just one crown to adjust the time that (as far as I'm aware) most people would wear on shabbat (especially an ...
9
votes
1answer
175 views

Group coordination for a siyum

My understanding is that a siyum should be made on the last bit of the text being studied. Thus, if the entire Mishna (all six "orders") is studied for someone's yahrzeit, the last mishna (individual ...
5
votes
0answers
136 views

Eating out Friday night of Chanukkah

If one is lighting Chanukkah candles inside (for whatever reason) relying on the publicization to himself and his family, then what should he do on Friday night if he is eating out? Must he make the ...
15
votes
6answers
1k views

Why are women exempt from (many) time-bound mitzvot?

I have heard two reasons for women being exempt from time-bound mitzvot and both seem problematic, so either there are additional explanations or I am not properly understanding these two: Women ...
6
votes
0answers
139 views

Rishonim saying Ester took place during the second bayis

Elsewhere on this site, avi cited sources to the effect that, contrary to the Bavli (M'gila), the events recounted in the book of Ester took place after the second bes hamikdash was built. Do any ...
9
votes
1answer
369 views

Brewing fresh coffee for Shabbos with a time clock

May one prepare coffee ingredients in a brewer such as this one on Friday and set the timer to brew the coffee for 8:00 Shabbos morning?
9
votes
2answers
209 views

Why only on the first Saturday night of Selichot is the minhag to start at midnight?

Pretty self explanatory. Some say at chatzot all week and some in the morning. Why davka on the first night does everyone say at night? This minhag does not seem apply on the second Saturday night ...
2
votes
3answers
218 views

Precise Zemanim?

This site (see the paragraph starting with "accuracy") says that no one can predict the times for sunrise and sunset to within a minute accurately for a given location because of certain atmospheric ...
8
votes
3answers
215 views

Moshe Rabbeinu's knowledge of future events

If Moshe Rabbeinu was taught the entire Torah on Mt. Sinai (Rashi on Vayikra 25:1, Rambam), how do we explain events such as the incident involving the Bnos Tzelafchad (Bamidbar 27:1-11), or the tamei ...
5
votes
3answers
3k views

What is the meaning of יוֹם (yowm) in Bereshit?

I've heard conflicting reports of how the creation days , יוֹם (yowm), in Bereshit are interpreted in the Jewish community. How do actual Hebrew scholars define day in Bereshit? six 24 hour periods or ...
14
votes
3answers
283 views

How long can you say Asher Yotzar if you forgot?

If you forgot to say Asher Yotzar and remember a while later, is there a time limit as to when you are allowed to say it?
11
votes
1answer
462 views

Kiddush between 6 and 7 o'clock - Which clock?

Many people hold that one should not make kiddush on Shabbos between the hours of 6 and 7. (Sources: Shulchan Aruch Harav and Taamei Haminhagim, (who, in turn, bring a Maharil, a Magen Avraham, and a ...
3
votes
0answers
48 views

How much time must pass before making a second beracha on the same food?

If you made a beracha on a food or drink item and you took a sampling of it, how much time must pass until the next sampling for you to be required to make an additional beracha?
3
votes
3answers
272 views

how often do you have to check your mezuzot?

I heard it was twice in two years. Is that right? Where does that come from? If I have no reason to assume they became pasul do I still have to check them?
9
votes
2answers
258 views

Source for not eating Matzah prior to פסח?

Thanks to this question I am compelled to ask: What is the source for not eating Matzah prior to פסח? Is there a source for not eating it for 30 days prior?
8
votes
1answer
736 views

18 minute Matzah?

Are there sources EXPLAINING why we have to make matzah within 18 minutes? I understand having a time limit if in fact the reason we eat matzah is to reenact the speed which we left Egypt (that ...
7
votes
1answer
104 views

Call for Halachic Dateline Source(s)

OK, we've got some discussion going on about issues affecting life within the gray zone of the Halachic Dateline and the International Dateline, but what is the original source of such a concept, if ...
6
votes
2answers
378 views

Why 1,000 generations of ungiven Torah, not X years?

The Mainz Anonymous reads, in part (in my own translation): He created the Torah 974 generations before the world was created, then twenty-six generations [passed] from the creation of the world ...
4
votes
2answers
98 views

Why did it take so long to conquer and divide the land?

We learn that Yehoshua took 7 years to conquer the land and another 7 to divide it. Why did both of these take so long? Conquest (at least from the details of the description in the text) took at ...
3
votes
1answer
435 views

Self-winding wristwatches on Shabbos

Can self-winding wristwatches be used on Shabbos?
2
votes
1answer
212 views

Breakdown of Yirmiyahu's 70 year prophecy

Can someone supply a good breakdown of Yirmiyahu's 70 year prophecy, and the misinterpretations of the prophecy? This is what I've learned in the past: Yirmiyahu made a prophecy that 70 years after ...
2
votes
0answers
40 views

Doing “Hoiche Kedushah” for Shacharit [duplicate]

Possible Duplicate: Hechi Kedushah anytime? Do any posekim say that even in shacharit, one can do the "hoiche kedushah" if the minyan-goers really need to go to work, or are in a rush for ...
12
votes
3answers
152 views

What if you undo a shabbat melacha?

If you plant a seed shortly before the end of shabbat (zoraya) and then un-bury it after shabbat, or you put an uncooked food into an oven and then take it out within seconds without it having baked ...
4
votes
4answers
83 views

Is Moshiach Going to last forever?

Is Moshiach Going to last forever? When Moshiach comes are we going to have it for eternity? If there are different opinions the please state them all.
4
votes
2answers
175 views

Eating dairy after pareve on meat equipment?

If I eat hot pareve food that was made on meat equipment, is there a waiting period before I can eat dairy? I had always assumed so -- that the heat transfers the meatiness to the pareve food -- but ...
14
votes
6answers
438 views

Avoiding accidentally eating cheese

Whether one waits 6 hours, 3 hours, 1 hour, or somewhere in between, it is a common occurrence to find people mistakenly eating milk/cheese/yogurt too soon after meat. It seems like a problem that ...
11
votes
3answers
424 views

Time dilation and waiting between meat and milk

Suppose Ploni eats some meat. He then gets in a spaceship and accelerates to some significant percentage of the speed of light for a short trip into outer space, and then returns home. At the time ...
8
votes
1answer
209 views

What are the rules for ain mukdam umeuchar?

Sometimes we say that things in the Torah are not in chronological order. What are the parameters for this? do you need to have a mesorah (particular tradition) for this? Is there a list of all ...
7
votes
2answers
203 views

What are you supposed to do on Tisha baAv?

On Tisha baAv you can't eat wash oneself anoint oneself marital relation wearing leather shoes sit on a chair Torah study greeting people with a blessing conducting business going on a ...
7
votes
3answers
86 views

Melachah on Shabbath - after Shabbath

If Melachah was done on Shabbath, can the product of that Melachah be enjoyed after Shabbath, and if so, under what criteria (does it depend on how long after Shabbath, or on the need, or something ...
6
votes
0answers
127 views

Chatzi LaHashem

I've been having this discussion with my friends and family about the Halacha of dividing Yom Tov into Chatzi LaHashem (half of the day devoted to prayer and learning) and Chatzi Lachem (half of the ...
6
votes
2answers
92 views

How long does soil need to last?

If you move a tree with its soil, it's considered replanted (so the rules of orla kick in) unless it can live off of the soil you're moving it with. (Source.) Clearly "if it can live" doesn't mean "if ...
4
votes
2answers
121 views

Why are Pidyon HaBen ceremonies done towards evening?

Most Brissim are done in the morning, as it is mentioned that "Zerizim Makdimim L'Mitzvos". Why is this not applicable to a Pidyon Haben ceremony? If it is applicable, then why have I observed that ...
4
votes
1answer
510 views

How long is Orthodox Conversion?

How long is the conversion process into Traditional Orthodox and Modern Orthodox? What is the minimum time period in most cases? I know converts can spend years preparing until they actually finalise ...
4
votes
1answer
75 views

Saying slichos at any time but “ashmores haboker”, should we take out references to the early morning time so we are not “lying”?

Many of the Slichos refer to the early morning time: "Ashmores Haboker", which is clearly not applicable to those who say late slichos (say at 8 AM) or who say it early at night (say at 10 PM, let's ...
3
votes
2answers
107 views

Daf Yomi Scheduling for Shabbos, Yom Tov, and Sundays

With the twelfth Siyum HaShas behind us, I was wondering what is the best way for a person to maintain their Daf Yomi schedule on Shabbos, Yom Tov, and Sundays. Is it best to learn at a different time ...
3
votes
3answers
122 views

Does a Late Bris Necessitate Teffilin?

When one makes a Bris after Shacharis, he wears Tefilin. If a Bris is made later on in the day, does he wear Tefilin? Why or why not? And if he does, does it require a second Bracha?
3
votes
2answers
121 views

Shalom alecha rebbi (u'mori)

What is the significance of the time it takes to say Shalom Alecha Rebbi (U'mori)?
2
votes
1answer
91 views

Why whole-day or daytime fast?

Why is it that the 9th of Av is a full-day fast but the other post-Mosaic fasts are daytime-only fasts? What determined the length?
2
votes
2answers
149 views

Mishkan before/after Egel (Rashi & Ramban)

The Ramban and Rashi disagree when the Mishkan was commanded to be built. Either before or after the Egel HaZahav respectively. Can you provide SOURCES that are able to reconcile their differences? ...
1
vote
1answer
73 views

Should we really say kaddish for twelve months for a parent?

Is Kaddish really twelve months for a parent? When I said Kaddish for my father fifty years ago I read in the prayer book at the Chevra Kaddisha Bnai Jacob in Montreal that it should only be for ...
1
vote
5answers
322 views

What makes prayer take so long?

I have noticed that some people take a lot longer to pray than others. I was wondering what exactly adds to this length? I do understand it's probably thinking of the meaning of the words etc. but ...
1
vote
4answers
329 views

Is Hashem spiritual? [closed]

I know that Hashem is not physical but is He spiritual? Also does He exist in time?
-2
votes
1answer
100 views

Is one permitted to report inflated driving hours?

In the United States, all applicants for a driver license (and permit) must have driven a certain number of hours, which varies per state. In some states the number of required hours is very high, ...