Questions tagged [time]
For questions relating to time.
43
questions with no upvoted or accepted answers
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Proper day and time for a Shloshim Seuda
Per Chabad.org: "Traditionally, families gather on the eve of the Shloshim to share support, recite prayers and Psalms, and to give charity in the merit of the deceased. Many will also make a Siyum, ...
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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 ...
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Is it better not to wear a watch on Shabbat?
I know it is permissible to wear a watch on Shabbat, and I have already perused this question about the particulars of what kinds of watch features are and are not permitted (ignoring the issue of ...
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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 ...
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Source of a story about Rav Salanter and limited time to learn Torah
Is there an authentic source for the below story?
The story is told of a man who asked Rabbi Yisroel Salanter a question. "Rebbi, I have only 15 minutes a day to learn Torah. What should I study?" ...
user17319
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The forgetful Shomer
With regards to some of the mitzvos(shema,sefirah,Chanukah lighting) one cannot sit down to a set meal until he completes the mitzvah once a certain time comes (30 min before shekiah or tzeis -its a ...
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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 ...
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Morning seder as the "main" seder
In most Yeshivas with which I am familiar, morning seder, the regimen of learning before lunch, is the more in-depth and intense learning seder, while afternoon seder (session) is generally less in-...
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Davar Ha'avad on Chol HaMoed -- Loss coming later
It says in SA OC Siman 537 that one is allowed to do a malacha on chol hamoed if it's a "davar ha'aved". That is to say if the person doesn't do the malacha now it will come to a loss ("hefsed".)
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"Yichud L'Olam" in Hilchos Muktzeh
In Hilchos Muktzeh we find there is an idea that even a rock ("evan") one can be m'yached (set aside) for a certain purpose allowing one to move it around on Shabbos (See SA OC Siman 308 Sif 22.) ...
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Connection of Toch Kedei Dibbur to Walking 4 Amot
According to this, the gemara compares Toch Kedei Dibbur (the length of time neccasary to greet someone; see Shalom alecha rebbi (u'mori) ) to the time it takes to walk 4 amot (cubits). Thus, with ...
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When were the decrees against the boys made?
In Parshat Sh'mot (Ex 1:15) Par'oh decrees that the boy children of the Hebrews should be killed.
When was that moment in relation to the timeline of events in Egypt (the death of Yosef, the ...
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How frequently should Shatnez laboratories be checked?
Many cities have a laboratory where individuals can take their clothes to check if there is shatnez and if necessary to remove it.
Often these laboratories are under the supervision of the local Beis ...
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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 ...
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Passover Seder for the infirm. Leniencies?
These questions have already been asked of a Rav. The object of asking them here is to be better informed to understand the sources used by and the answers given by the Rav.
[1] I hope to make ...
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Info on Chanukah oil burning lengths
If I recall correctly, Chanukah lights must burn until at least 1/2 hour after nightfall (or after they are lit).
I know that different types of oil burn faster or slower. Would someone know if there ...
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To know in advance when one is a niddah
The gemoro and shulchan aruch has much to say about 'vestos', way to find out in advance when one will be a niddah, which rarely work today. There are modern methods which do work: does one have to ...
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Inconsistent scheduling for the musaf offering
In P'sachim (58a), Abaye frames a disagreement between Rabbi Yishma'el and Rabbi Akiva regarding the ordering of the korban musaf and the bazichin (bowls of frankincense burned when the old showbread ...
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What is the source of the teaching that Hashem, unlike humanity, perceives time continuously?
I recall once reading a passage that discussed divine perception of reality. The idea was something like this: Humans blink their eyes, and so do not see everything that happens in time. Hashem, ...
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How accurate do I have to be in performing mitzvos to time?
We can now measure time more accurately than in the past (see this question). What are the implications? I do not ask about situations where the time is critical for a Torah law where obviously one ...
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Where was Abraham born?
Where was Abraham born?
There are a couple of confusing, and perhaps even conflicting verses in the bible about Abraham's original homeland.
The general consensus is that Abraham and his family were ...
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Why is the actual length of Galus Mitzraim not mentioned in the Torah?
Chazal expound that the Jews were in Mitzraim for 210 years (see Rashi to Bereishis 42:2, and to Avodah Zarah 9a). Why is this figure mentioned nowhere explicitly, especially when other numbers are (...
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How long did King David reign in Jerusalem before he brought the Ark there?
In the book of Samuel 2, Chapter 7 it says:
They brought in the Ark of the LORD and set it up in its place inside the tent which David had pitched for it, and David sacrificed burnt offerings and ...
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What happened to the "notar" (left-over) of the 1st Pesach lamb?
Exodus 12:8:
וְאָכְל֥וּ אֶת־הַבָּשָׂ֖ר בַּלַּ֣יְלָה הַזֶּ֑ה
And they shall eat the flesh in that night.
Exodus 12:10:
וְלֹא־תוֹתִ֥ירוּ מִמֶּ֖נּוּ עַד־בֹּ֑קֶר וְהַנֹּתָ֥ר מִמֶּ֛נּוּ עַד־בֹּ֖קֶר ...
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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,...
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Quality of Sh'ma repeated in its proper time
Often, I find myself at a ma'ariv minyan that meets before "nightfall" and someone invariably makes the announcement that we should all remember to repeat the sh'ma after tzeit hakochavim. I ...
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Angels saying Shirah before Hashem - "daily" rituals?
Rashi on Gen 32.27
כי עלה השחר. וְצָרִיךְ אֲנִי לוֹמַר שִׁירָה בַּיּוֹם (חולין צ"א):
כי עלה השחר FOR THE DAY BREAKETH, and I have to sing God’s praise at day (Chullin 91b; Genesis Rabbah 78:1).
...
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18 × 4 is not 72
MyZmanim says:
According to most Poskim, it takes 18 minutes for an average person to walk a distance of one mil, and therefore 72 minutes to walk 4 milin.… Others say it takes 22.5 minutes to walk ...
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Custom to light yahrzeit candle on Erev Shabbos before the yahrzeit
Has anyone heard of a custom to light a yahrzeit candle not on the eve of the actual yahrzeit, but on the eve of the preceding Shabbos? I know that there are other customs for the preceding Shabbos, ...
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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 ...
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Laws of Mourning - Cutting Hair (w.r.t. Rav Ovadia z"l)
I was interested to know what practice the sons of Rav Ovadia z"l had followed in regard to cutting their hair after the passing of their father?
I.e., for how many months did they leave their hair ...
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Moshiach's Time of Arrival
Are there any sources that inform us of what time of the day Moshiach is supposed to come (e.g. morning or noon)?
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Time limit on repeating the shemona esra after forgetting to include an insertion
If a person forgets to say yaaleh vyavo for rosh chodesh during the shemonah esre, I understand they are supposed to go back and repeat the shemonah esre, this time saying yaaleh vyavo. Is there a ...
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Mitzvah to learn “day and night” - what are the time parameters?
The Rambam writes in Hilchos Talmud Torah:
כָּל אִישׁ מִיִּשְׂרָאֵל חַיָּב בְּתַלְמוּד תּוֹרָה בֵּין עָנִי בֵּין עָשִׁיר בֵּין שָׁלֵם בְּגוּפוֹ בֵּין בַּעַל יִסּוּרִין בֵּין בָּחוּר בֵּין שֶׁהָיָה ...
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When is learning "done"?
I learn with a group of people each week and we take turns leading. I need a lot of time to prepare and usually start a week in advance. I read and review multiple times during the week. If I am ...
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Daniel 7:25 reads "He will think of changing the times..." What does it mean? And how does it correlate to history?
In Daniel 7:25 it reads:
"He will think of changing the times..."
I wonder: What does it mean? And how does it correlate to history?
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Time as a Spiral
@PixelArtDragon asked what rabbi originated the idea that time is a spiral. @PixelArtDragon said that the earliest they've found is Rav Natan Breslov who lived from 1780-1844 - can anyone locate that ...
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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 ...
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Hours for אהבה רבה on Shavuos; true or exaggeration?
In two recent shiurim I heard a story about a certain (don't remember the name) Yeshiva in pre-war Europe where they took (three?) hours to say אהבה רבה (the blessing before Shema) on the morning of ...
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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 ...
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Waking Up in Halacha
The first halacha in Shulchan Aruch debate:
One should strengthen himself like a lion to get up in the morning to serve his Creator, so that it is he who awakens the dawn.
Rema: At least, one ...
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Why does Hashem wait ten years before He passes a decree?
The Yalkut Shimoni (Chapter 620) says, "Hashem waits ten years before He passes a decree."
Which is interesting, because it took ten years to find and kill Osama bin Laden!
Why does Hashem wait ten ...
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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 ...
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