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Questions tagged [time]

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What was the order of events, by hour, for each of the first 5 days of creation?

B"H There's a maamar chazal (Avos DRebbi Noson 1:8) that tells us the specific order of events on the sixth day by hour.. One hour, Hashem gathered Adam's dust from around the world, another hour ...
Awtsmoos--עצמות's user avatar
2 votes
1 answer
76 views

Do Jews have to take time from work to spend requested time with their parents

According to Halacha, Jews are obligated to honor their mothers and fathers. My question is, if a mother or father requests their child spend time with them, and that would conflict with their job ...
Kirk's user avatar
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1 vote
0 answers
62 views

"One who does not waste time, has time for everything" - learning on Shabbos

The Chida, in his Moreh BeEtzba (153) writes basically that on Shabbos, ones occupation should solely be Limud HaTorah. He says, כי לא נתנו שבתות וי״ט אלא ללמוד תורה. ומי שאינו מאבד הזמן יש עת לכל ...
Shmuel's user avatar
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2 votes
1 answer
129 views

How long is one Fleishig after eating something cooked with meat

According to Halacha, how long is one fleishing after consuming something that is typically pareve cooked with meat? For example, if someone ate vegetables that were cooked in a beef soup, are they ...
Kirk's user avatar
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2 votes
1 answer
95 views

What is the Schar one receives for being amongst the first 10 in a minyan?

I know it's important to be amongst the first 10 in a minyan, but what is the reward for doing so?
YoungBochur's user avatar
-1 votes
1 answer
95 views

Volunteering to weed an academic free library: A mitzvah, or a waste of time?

Background Imagine that you go to a university which has ~55,000 students, including maybe ~1,500 Jewish students. Imagine, also, that you're male. Therefore, you're required to spend some time ...
unforgettableidSupportsMonica's user avatar
1 vote
1 answer
147 views

Using a predated ketubah at a wedding ceremony

In Halacha, is it permissible to use written and signed ketubah that predates the actual wedding ceremony? So basically, the ketubah is written and signed like a day or so earlier than the actual ...
Kirk's user avatar
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5 votes
3 answers
447 views

List of “essential prayers”?

If someone is learning how to pray and wants to start with the essentials - to not be overwhelmed by too much at once - or if someone is limited in time available to pray, what are the core (most ...
Sarah's user avatar
  • 121
4 votes
0 answers
69 views

Relativistic Zmanim [duplicate]

Physicists have conclusively proven that if a spaceship leaves Earth and travels fast enough, then turns around and comes back, a person in the spaceship experiences a much shorter time than people on ...
Moses Supposes's user avatar
3 votes
1 answer
140 views

Latest time for morning Sh’ma

What are the opinions for the absolute LATEST time for reciting the morning Sh’ma B’dieved, not l’chatchila. Obviously there are different opinions for what is the latest or not but what are they. ...
Kirk's user avatar
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2 votes
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38 views

Are there time parameters for when 10 people have to combine for Shemone Esrei?

Say you have a minyan, and when the Chazzan starts Shemone Esrei, 8 of the others are up to that point and begin as well, but the others aren’t yet up to Shemone Esrei. Is that a problem for the 9 ...
michael's user avatar
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1 vote
1 answer
65 views

Feast of achashverosh connected to failed 70 year prophecy

What is the source where it actually mentions that one of the reasons for the feast of Achashverosh was celebrating the "failed" prophecy of Yirmiyahu?
The Targum's user avatar
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4 votes
0 answers
87 views

Tosefes yom tov: What's the maximum amount of time which can be added onto the end of Yom Tov?

The concept of tosefet Yom Tov lets us voluntarily extend the duration of Yom Tov past the time when it would normally end. What's the maximum amount of time which can be added onto the end of Yom Tov?...
unforgettableidSupportsMonica's user avatar
0 votes
0 answers
30 views

What does it mean that judgement happens on Rosh Hashanah?

What does it mean that G-d judges people on Rosh Hashanah, if G-d is 'outside of time'? It's one thing to say that G-d performs an action (e.g. sends the Maan, talks to a prophet) that has a ...
user9806's user avatar
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2 votes
0 answers
43 views

If something was unusable/unavailable when I made "early shabbos", does it become muktzeh?

Normally an object is defined as muktzeh if, at the time Shabbos started (let's call it "dusk"), it was unusable. If an apple was on the tree at sunset and falls off the tree two hours later,...
Shalom's user avatar
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2 votes
1 answer
179 views

What are some Resources for Learning About Zmanim?

I'm interested in learning more about Zmanim, specifically, the different calculations involved and how to determine these times. I understand that the calculation of Zmanim can be complex, changing ...
MendelG's user avatar
  • 139
3 votes
3 answers
213 views

What is the order of the Great Hallel (Hallel HaGadol)?

Psalm 136, the Great Hallel (Hallel HaGadol), is a series of praises of Hashem. It is ordered starting with the wonders of creation, moving onto taking us out of slavery, followed by the miracles ...
NJM's user avatar
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3 votes
2 answers
130 views

Significance of Torah day starting at sunset, vs secular day starting at sunrise

This is a very general question, and I hope for some general answers. However, in order to focus it, I would like to specify one point. In the secular world, the day starts with "waking up" ...
Rabbi Kaii's user avatar
1 vote
0 answers
155 views

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 ...
user's user avatar
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0 votes
0 answers
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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 ...
rosends's user avatar
  • 38.3k
2 votes
1 answer
105 views

Does very fast public prayer demonstrate lack of respect for G-d?

Prayer is a human being speaking to Hashem. I would think that this speech should be done in a respectful way. Therefore I ask if the sources (or validated reports) refer to the concept of very fast ...
Avrohom Yitzchok's user avatar
1 vote
1 answer
129 views

'Rega' in halacha

King David uses the word 'Rega' ( moment) in his Tehillim. Rambam, the Gemara etc. also use the word 'Rega' to describe a moment. Can we assume that all the previously mentioned speakers are using the ...
Mars Sojourner's user avatar
3 votes
1 answer
307 views

Many-worlds interpretation (MWI) interpretation of quantum mechanics [closed]

There is a well known and popular interpretation of quantum mechanics known as the Many-worlds interpretation (MWI) interpretation of quantum mechanics. It says that, "... all possible outcomes ...
Mars Sojourner's user avatar
0 votes
2 answers
202 views

Time runs quicker before the Messiah comes; source?

I remember hearing that the Talmud says that before the Messiah comes, events will occur with decreasing gaps between them as if time was running faster than usual. Where is this stated?
Davidovici Patrick's user avatar
2 votes
2 answers
189 views

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, ...
Larry Denenberg's user avatar
0 votes
1 answer
43 views

If Iyov 2:1 states HaYom occurs in Heaven before HaShem, does Laylah also occur in Heaven?

Understanding "Ha-Yom" in [Iyov 2:1] raises questions about the occurrences of Yom and possibly Layla in Heaven. Now [The-Day] came about that the divine beings presented themselves before ...
חִידָה's user avatar
  • 1,418
4 votes
4 answers
320 views

Importance of coming on time for davening

I'm looking for sources/inspiration about the importance of coming on time for davening. Not about being in the first ten, but just being there on time time. The more the better. Any help would be ...
Avi Rose's user avatar
4 votes
1 answer
108 views

Hourly timeline for the Exodus

In order to get an idea of what it was like to have participated in the Exodus, I would like to see an hourly timeline for the process, starting after noon on the 14 Nissan 2448. The timeline should ...
Avrohom Yitzchok's user avatar
1 vote
0 answers
50 views

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 ...
rosends's user avatar
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7 votes
3 answers
229 views

What is the point of revealing the end of time to Daniel only to conceal it?

The book of Daniel chapter 12 seems to provide Daniel with information related to the end of time only to then instruct Daniel to keep the information secret (12:4). Daniel then asks when the end of ...
rikitikitembo's user avatar
3 votes
1 answer
150 views

Earliest Sources for Giving Maaser of Time

Rav Moshe Feinstein writes in a teshuva (EH 4:26:4) that one must give a tenth of his time for others the same way one should give a tenth of his money. What are the earlier sources for such a concept?...
NJM's user avatar
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3 votes
1 answer
295 views

How many time-bound positive mitzvot are women obligated in?

Women are generally not obligated in positive mitzvot bound by time. There are some exceptions, such as eating matzah on Pesach and making kiddush on Shabbat. What other time-bound positive mitzvot ...
user avatar
1 vote
0 answers
214 views

Havdalah before the proper time [closed]

The Gemara Berachos 27b talks about making havdalah before the end of Shaabos: רַבִּי יֹאשִׁיָּה מְצַלֵּי שֶׁל מוֹצָאֵי שַׁבָּת בְּשַׁבָּת: אוֹמֵר הַבְדָּלָה עַל הַכּוֹס אוֹ אֵינוֹ אוֹמֵר הַבְדָּלָה ...
therxv's user avatar
  • 487
1 vote
3 answers
76 views

“Pray at the same time as the community”- refers to the Amidah. Source please

Shulchan Arukh, Orach Chayim 90 prescribes that someone davenning alone should synchronise his prayers with the community: ישתדל אדם להתפלל בב"ה עם הציבור ואם הוא אנוס שאינו יכול לבא לב"ה ...
Avrohom Yitzchok's user avatar
2 votes
0 answers
75 views

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 ...
Avrohom Yitzchok's user avatar
2 votes
1 answer
130 views

How many days are there in each year of the 304th Metonic cycle? [closed]

I need the number of days per year for my continuous Hebrew calender.
Julius Ronquest's user avatar
4 votes
0 answers
254 views

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?" ...
user avatar
1 vote
0 answers
36 views

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). ...
Al Berko's user avatar
  • 26.1k
0 votes
3 answers
447 views

"No before and after in Torah"?

Chronological difficulties are frequently explained in the Sources by the concept of אין מוקדם ומאוחר בתורה -- Ein Mukdam U'm'uchar Ba'Torah -- There is no before and after in Torah. (1) Where is the ...
Maurice Mizrahi's user avatar
3 votes
1 answer
1k views

How many ‘Watches’ were there in an ancient Hebrew day?

A few mentions in the scriptures point to the existence of night and morning ‘watches,’ a notable example being Gideon’s arrival at the Midian camp in the middle watch. (Judges 7:19) Another example ...
Christian Gedge's user avatar
0 votes
0 answers
88 views

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 ...
barayehudit's user avatar
1 vote
0 answers
214 views

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 ...
msh210's user avatar
  • 73.4k
0 votes
0 answers
76 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 ...
user9806's user avatar
  • 2,286
2 votes
1 answer
256 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,...
user9806's user avatar
  • 2,286
5 votes
1 answer
108 views

Ein Kamocha on Shabbat

Before the Ark is opened on Shabbat, we don't just say "veyahi b'n'so'a ha'aron" as we would on a weekday. We begin with Ein Kamocha. The Artscroll siddur (I don't have the page number handy) explains ...
rosends's user avatar
  • 38.3k
4 votes
1 answer
35 views

Asymmetry of R. Meir's times to inspect tzara'at (Nega'im 2:2)

Nega'im 2:2: אֵין רוֹאִים הַנְּגָעִים בַּשַּׁחֲרִית וּבֵין הָעַרְבַּיִם, וְלֹא בְתוֹךְ הַבַּיִת, וְלֹא בַיּוֹם הַמְעֻנָּן, לְפִי שֶׁהַכֵּהָה נִרְאֵית עַזָּה. וְלֹא בַצָּהֳרַיִם, לְפִי שֶׁעַזָּה ...
Joel K's user avatar
  • 44.3k
6 votes
1 answer
147 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 ...
Dude's user avatar
  • 4,453
9 votes
2 answers
177 views

Why did Ralbag's commentary to Leviticus take so much longer than the other books of the Torah?

At the end of each book in his Commentary to the Torah, Ralbag gives us the date he completed it. At the end of the book of Genesis he tells us that it was completed in October of 1329: והנה היתה ...
Alex's user avatar
  • 49.7k
2 votes
1 answer
297 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 ...
Joel K's user avatar
  • 44.3k
-3 votes
1 answer
154 views

Time-related Mitzvot - much more obligation than Ptur

The Mishnah in Kiddushin 1, 7 says: "וְכָל מִצְוַת עֲשֵׂה שֶׁהַזְּמָן גְּרָמָהּ, אֲנָשִׁים חַיָּבִין וְנָשִׁים פְּטוּרוֹת. " And every positive commandment that is time-dependent, men are ...
Al Berko's user avatar
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