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63 views

Do we use a fixed clock interval or the Sun to define the concept of “day”?

Follow up on the Earth stopping rotation question. What if instead of stopping, the Earth simply slowed down or sped up its rotation rate (as it has, historically)? Do we halachically count a ...
2
votes
2answers
228 views

If Earth stopped rotating, would we keep Shabbos?

A hypothetical question, but perhaps nonetheless illustrative of underlying principles : If by some method, humanity [or some non-human force] managed to stop the rotation of the Earth around its axis,...
6
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1answer
97 views

How long must a grave remain a grave?

I was recently reading an article which suggested planting trees over graves which made me think of this question... How long does Jewish law require a grave to remain as a grave for the original ...
2
votes
1answer
92 views

When to light yom tov candles?

At what time should one light the candles on (the first night of) yom tov? On yom tov it is permitted to light a fire from a pre-existing flame (unlike shabbat) so it seems like one could light yom ...
5
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0answers
59 views

Use of “חלק” measure of time in Halachah

"חלק", being a 1/1080 part of an hour, is used in calculating the New Moon. Rambam in הלכות קידוש החודש mentions that the original tradition of calculating the New Moon was forgotten and the system ...
3
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2answers
91 views

Davening Mussaf at home

I seem to remember that when a person davens at home, (I remember it in connection with Yom Kipur, but maybe it's always), s/he should ensure to only start with mussaf once the kehilla has started. I ...
4
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2answers
1k views

Latest time to say Maariv

When is the latest time one can daven Maariv/Arvit? Is there a divergence between the letter of the law and an ideal time (לכתחילה/בדיעבד)?
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0answers
122 views

May one say Yehi Ratzon prayers at any time?

Take the Yehi Ratzon recited before Hamapil (at least, in my nusach ashkenaz). May one recite it in the mornings, with the rest of his tefillos during Shemoneh Esrei, for instance? Or must it be said ...
2
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1answer
54 views

Techilaso BiF'shi'ah Vesofo BeOnes by Tashlumim

SA OC 108 gives the halachos of Tashlumin: if one forgot or was unable to daven, he is able to make it up by davening the next Shemoneh Esreh twice. (This is an oversimplication, but that's the gist ...
1
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1answer
208 views

Circumcision exceptions on the rule?

If one gives birth to a premature/preterm son, or if the childs weight is to low, for example, would it still be circumcised on the 8th day or are there exceptions to the command?
3
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1answer
83 views

Waiting times after fleishig based on amount?

On the tzad that you wait one hour, it's based on the time it takes for food to begin digestion. Is there a difference between whether one has just a little bit of meat, which takes shorter to break ...
-1
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1answer
960 views

How early can a woman go to mikva after period?

Is there a way in which a woman wouldn't have to wait 5 days after the start of menses, starting the count of 7 days earlier in order to go to mikva?... I would like to hear a clear answer for a ...
2
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1answer
371 views

Source for waiting between milk and meat?

There is a widespread custom to wait 30 min between (soft) cheese and meat. What is the origin and source of this custom?
2
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0answers
60 views

waiting after meat, in contexts other than basar bechalav

Waiting after meat before milk comes from a concern of either the taste being still in your throat or particles still in your teeth and you are eating that with milk. Do we apply this in other cases ...
3
votes
1answer
80 views

What constitutes “sending” Manot?

On Purim, I will drive around and deliver my mishloach manot. However, if a person is not home, I might leave the package at his door. If he doesn't arrive until days later, have I still satisfied my ...
4
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2answers
144 views

Scheduling Email for 3AM and Gneivas Daas

Is is permitted to schedule an email for the wee hours of the night, like 3AM, to give the impression that you were working late? Is it significantly well known that there are services like ...
4
votes
1answer
118 views

How long are brachot applicable to a given food?

If I start, say, drinking a bottled drink or eating chips from a bag, then later (in the day, in the week) continue to eat from it, do I need to make a new brocha? If so, how long can the pause be ...
0
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1answer
182 views

What is considered the “correct speed” for a Shabbat morning service?

I've had a few discussions with various co-congregants about "fast" and "slow" minyanim. Our shul building has 2 minyanim. The main one has a professional chazzan. We begin Shabbat services at 9 am ...
12
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1answer
600 views

Where did the myth that the *entire* matza process must be done in under 18 minutes come from?

I've been going over the halakhoth for baking matzah, and even though I hear from almost every Rabbi I've asked that the entire process must be done in under 18 minutes, I can't find any evidence for ...
9
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2answers
129 views

Is there a halachic time limit for sending an organization its charity box money?

Many Jewish organizations distribute tzedaka (charity) boxes. A few that I know tell people, "collect the money and at some point, empty the money and mail us a check." Let's say someone leaves this ...
8
votes
1answer
1k views

Does one really have 30 days to put up a mezuza outside Eretz Israel?

It is broadly known and codified that one has 30 days to put up a mezuza when renting a home outside Eretz Israel. I heard that this dated from the times where Jews might be expelled in their first 30 ...
4
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1answer
1k views

Does the one-year rule regarding Milchig and Fleishig pots apply to non-Kosher vessels?

According to Ashkenazi tradition, "If a meat/milk pot hasn't been used for a year+, it may be used as the other type without Kashering". If I have a ceramic coffee mug that may or may not have ...
6
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1answer
3k views

How often should one have marital intercourse with his wife?

What is the frequency of marital intercourse prescribed by Halacha? I am confused as the Talmud in Ketubot 62a says that for men of independent means it is every day. But the Rambam in Mishneh ...
6
votes
1answer
780 views

Is it forbidden to use a sand timer on shabbos?

Everyone I know seems to say that using a sand timer (hourglass) on shabbos is forbidden. The question is why? Is it because of sifting? Is there some other melacha involved? Is it actually forbidden?
4
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0answers
52 views

Dedications and Their Expected Life-Span

Several years ago I was doing an observation in a private secular pre-school. The school is housed in the former Talmud Torah building still owned by the synagogue immediately next door. (The student ...
4
votes
1answer
226 views

In kashering, can you leave utensils eino ben yomo *before* cleaning?

As I understand, the first step in kashering a kitchen is to thoroughly clean everything and then leave it untouched for 24 hours (eino ben yomo). Would it be technically permissible to clean the ...
1
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0answers
64 views

How much time do you have to start answering “amen yehe sheme raba…”?

How much time do you have to begin answering "amen yehe sheme raba..." after the person saying kadish reaches that point? Is it the same ruling as that for answer a regular amen for a bracha (i.e. the ...
3
votes
1answer
95 views

When does the clock for a husband annulling his wife's vows start?

A husband can annul his wife's vows that she makes, for a single calendar day after he hears it. This means that if he hears it at night, he has nearly 24 hours until the next sunset; in the morning, ...
1
vote
1answer
89 views

Are oaths prohibited or only discouraged?

Are oaths prohibited or only discouraged? And is there a difference between swearing what happened in the past versus swearing what one will do in the future. One can't be sure he will live up ...
4
votes
1answer
748 views

Adjusting timers on Shabbat

Can one adjust a socket timer (picture below) on Shabbat to keep one's hotplate or lamp on for longer, etc?
3
votes
1answer
202 views

Kids waiting between meat and milk

There is a rabbinic obligation to wait between meat and dairy though customs are diverse regarding how long to wait, ranging from 1 hour (for those who come from e.g. Dutch communities) to the more ...
3
votes
1answer
209 views

Finish it later and make a siyum?

Suppose someone part of a work of Torah and, later, picks up where he left off. Can he make a siyum (e.g. to exempt b'choros from fasting erev Pesach or to allow wine before 9 Av)? Possibly this ...
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0answers
54 views

Is old matza kosher for Pesach? [duplicate]

Someone recently made the claim to me that matza from a previous year was considered chametz / may not be used on the subsequent Pesach. (And as such, they plan on throwing out the matza from last ...
1
vote
1answer
125 views

If you travel back in time, would you be obligated in Mitzvot?

Let's say time travel is possible, Time-Turner style. You are age 31. You travel back 20 years to when you are 11 years old, before your Bar Mitzvah. At that time period, you were not Chayav ...
1
vote
1answer
169 views

Bracha on Tzitzit

If one takes a nap and has the intent to put tzitzit back on, does he need to make a new bracha when he does so? Is it considered hesach hadaas (loss of concentration)? Or does his intent obviate ...
1
vote
1answer
105 views

How often must a worker in a spice store say “Borei Minei B'Samim”?

How often must a worker in a spice store say "Borei Minei B'Samim"?Pretty simple question. I assume that once per day? Or is he exempt because he is expose to it constantly and this is part of his ...
2
votes
1answer
93 views

Bentching gomel - time limit?

We recite birchat hagomel after 1. traveling over the ocean; 2. traveling over the desert; 3. recovering from a serious illness; and 4. being released from prison. (Whether other cases of salvation ...
3
votes
0answers
98 views

What happens if I wrap my tefillin before the earliest time to wrap tefillin? [closed]

The earliest time to wrap tefillin in my town is 6:14 (for the next little while), on Monday and Thursday we start at 6:15. Is it OK if I finish wrapping my tefillin before 6:14? Do I still get the ...
5
votes
0answers
98 views

Issues of lifnei iver with an inaccurate clock

Is there any problem with lifnei iver (giving bad information) in having an inaccurate clock that someone else will look at? I'll examine a few cases here. The clock is a few minutes off. I don't ...
8
votes
2answers
266 views

Is it true that it is 'Hiddur Mitzvah' to have the Hanukkah lights stay lit for longer?

Does it make a difference if the Hanukkah lights are lit for an hour or an hour and a half? Is it more of a 'Hiddur Mitzvah'?
5
votes
1answer
270 views

Does a Shomer help for Eating before Lighting?

The Mishna Berurah (672:10) says ואפילו ללמוד אסור משהגיע זמנה וכ"ש אכילה וש"ד ואפילו התחיל פוסק Even to learn is prohibited once the time of lighting Chanuka candles arrives. And all the more ...
3
votes
1answer
72 views

How long is לאלתר?

In the mishna on Gitin 27a, the rule is that if someone delivers a get (bill of divorce) from another country, loses it, and finds it again, should not deliver it to the woman unless he either finds ...
0
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0answers
38 views

Tzeddaka when traveling after maariv

It is recommended to give tzeddakah when embarking on travel, preferably in the morning because of the spiritual 'climate' of day. “One should not give [tzedakah] before the evening prayers [in ...
15
votes
4answers
418 views

Intentionally using a grace period on a rental

I recently rented a bike for a few hours, and the person in charge of the rental told us that we have "X number of hours, and a 15 minute grace period," followed by the warning that if we don't return ...
13
votes
3answers
1k views

Is there a “5 second rule” for foods becoming non-Kosher?

OK so I don't actually mean a 5 second rule. But is there an amount of time that it takes for something hot that comes in contact with a non-Kosher utensil or surface to become not kosher? For ...
1
vote
1answer
207 views

The blessing שהחינו‎ for a new wrist watch?

If you acquire a new wrist watch, do you make the blessing Sheheheyyanu?
4
votes
2answers
218 views

(When) should skipped parts of davening be made up?

If someone skips parts of shacharit in order to say shemoneh esrei with the congregation, (when) should the skipped paragraphs be made up?
5
votes
2answers
921 views

Can you build a succah on Sukkot?

After reading How do I do the car-door-sukkah trick?, i wondered: isn't this building it on Sukkot? So, is it permissible to build a succah on Sukkot? I originally thought no, because i know that ...
7
votes
2answers
128 views

Skipping parts of pessukei dezimroh to get to work on time?

Kitzur shulchan aruch states that if a person is afraid of being late to recite shmonei esreh with minyan, it is allowed to skip some parts of the pessukei dezimroh... Does this apply to a person that ...
12
votes
2answers
154 views

Liability of substitute

If someone has an appointment, and arranges for a babysitter to come to watch his/her children while he/she goes to the appointment, and the babysitter doesn't show up, so the parent misses the ...