Questions tagged [time]

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1answer
172 views

How do we know that the Judaic calendar should be primarily lunar based?

There is nowhere in the Torah that specifically mentions that the calendar cycle is to be based mainly on a lunar cycle. (I'm intentionally omitting the notion of the solar / seasonal influence of ...
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1answer
1k views

How hungry does a Jew have to be to eat non-kosher food?

I understand that Jews are allowed to eat non-kosher food in order to save their lives, source Sanhedrin 74a. My question is, how long does a Jew have to be deprived of food, before he or she is ...
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1answer
84 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.
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2answers
163 views

Talmud study and time? [closed]

For how long must one study the Talmud in order to have a great understanding of it. Of course, some would use more time than others but there must be a general answer?
2
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1answer
159 views

Meaning of “Shabbatot” when it's translated as “weeks”

Vayikra 23:15 translates the word Shabbatot as 'weeks', weeks that are to be Temimot (compleet/perfect); Normally this would be from Yom Rishon till Shabbat like in the phrase: 'Yom rishon l'...
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2answers
2k views

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, ...
27
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12answers
3k views

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

Women are generally exempt from time-bound mitzvot (Kiddushin 29a). I have heard two reasons for women being exempt from time-bound mitzvot and both seem problematic, so either there are additional ...
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4answers
590 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 ...
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4answers
279 views

When Tana“ch uses the phrase ”until today" what does it mean?

There are numerous places where Tana"ch uses the phrase "עד היום" or "עד היום הזה" ("until\to this day"). Usually, this phrase is used regarding the names of cities, towns, etc. - occasionally, such ...
9
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2answers
159 views

Do traditional sources address how time “works”?

I’m sorry for such a convoluted question, but this has been bothering me for some time now. While the title isn’t quite accurate, I couldn’t think of a better way to phrase it - feel free to edit if ...
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3answers
177 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 ...
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0answers
147 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?" ...
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4answers
9k views

How long was Yosef in prison?

We know from Gen 37 that Yosef was 17 when he went out to meet his brothers and ended up on the way to Egypt, and we know from Gen 41:46 that he was 30 when Paro appointed him as second in commend. ...
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0answers
30 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). ...
2
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1answer
67 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 ...
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3answers
185 views

Blatant foreshadowing in the Torah

Genesis 13:10 has the following verse: וַיִּשָּׂא־ל֣וֹט אֶת־עֵינָ֗יו וַיַּרְא֙ אֶת־כָּל־כִּכַּ֣ר הַיַּרְדֵּ֔ן כִּ֥י כֻלָּ֖הּ מַשְׁקֶ֑ה לִפְנֵ֣י ׀ שַׁחֵ֣ת יְהוָ֗ה אֶת־סְדֹם֙ וְאֶת־עֲמֹרָ֔ה כְּגַן־...
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3answers
694 views

Sleeping between meat and milk

I have heard in the name of the Chasam Sofer that if one sleeps after eating meat that they can be lenient in the amount of time one would normally wait between eating meat and milk. Is this written ...
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3answers
682 views

Eating out Friday night of Chanukkah

If one is lighting Chanukah candles inside (for whatever reason) relying on the publicizing to himself and his family, then what should he do on Friday night if he is eating out? Must he make the ...
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2answers
268 views

Are there examples of backward time travel in the talmud and/or midrash?

The gemarah discusses a story where Moshe is taken to see the lecture hall of Rebbi Akiva and the midrash discusses God showing Adam ensuing generations and their scholars. I would like to know if ...
3
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1answer
113 views

G-d changing the past

A bit of a childish question. Is it possible for God to change the past? or is it one of those things that are generally possible but in certain occasions will never happen? I'm asking because of ...
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0answers
184 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 ...
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0answers
58 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 ...
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4answers
729 views

Eternal Gehinom

The talmud in Rosh Hashana 17a lists some sins which warrant eternal gehinom. Is this to be taken literally? Or perhaps it means a very long time or until the end of this world?
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2answers
128 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. (Masechet Orla 1,3 see Rambam.) Clearly "if it can ...
2
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1answer
237 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,...
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2answers
1k views

Blessings on Birthdays

There is apparently a practice among contemporary Jews of giving out blessings on one's birthday. Is there any source for this in the Jewish tradition?
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0answers
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 ...
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2answers
259 views

How is the story of the Torah being given told in the Torah itself?

How was the Torah (aka the Five Books of Moses) given if the story of the Torah being given is contained in these books? In other words, the Torah tells the story - close to halfway through it - of ...
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0answers
60 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 ...
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2answers
80 views

Iggeres Hagra - heavy falls light rises

What exactly is the comparison between time being a traitor and a scale that GRA is making? ‏והזמן בוגד והוא כמאזנים יגביה הקל וישפיל הכבד
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1answer
278 views

Should Kaddish for a parent be said for eleven or twelve months?

Should Kaddish for a parent be said for eleven or twelve months? 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 ...
4
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1answer
25 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 ...
3
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1answer
146 views

Timeline of the events in the midbar

I'm looking for a timeline that explains when the events in the midbar (or sefer Bamidbar) happened or at least in what order they happened in. E.g. The story of Miriam, the spies, Korach, the giving ...
3
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1answer
1k views

The time periods of the Acharit HaYamim?

Could someone please explain me the concepts of the following terms? What do the different periods in time refer to and stand for? - Olam Hazeh (Acharit HaYamim) - Olam Haba - Yemot HaMashiach - ...
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2answers
5k 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 ...
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12answers
1k 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 ...
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1answer
4k 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 ...
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3answers
472 views

Waiting six hours when chicken became meat

Poultry was once not considered fleishig. If someone had eaten chicken immediately before the rabbis decreed that poultry was fleishig, would he have had to wait his customary number of hours before ...
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8answers
3k 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?
6
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1answer
104 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 ...
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2answers
230 views

Can you fly from American Samoa on Friday evening to Upolu? (30 minute flight, 24 hour difference)

Firstly I'd like to point out if you Google "Samoa" and "Shabbat" you would find many articles from 2011 that were referring to a time where Samoa changed the day of Saturday, it happened only once ...
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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)?
4
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1answer
654 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 ...
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6answers
4k views

Moshe's age and the timeline of the exodus

Moshe was 80 when he approached Par'o before the makos, 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 ...
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2answers
443 views

No mitzvah to wear tefillin every day?

I heard that the Bet HaLevi and the Peri Megadim hold that there is no Mitzva for a person to don Tefilin everyday. Can someone source these opinions and explain exactly what they are meaning to say?
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4answers
2k views

Why did God take 6 days to create the world?

Generally we assume that God is omnipotent, and could have created the world in a single day/act, so He must have had a reason to organize creation into 6 days. Why? In other words: Why didn't God ...
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2answers
131 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 ...
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1answer
105 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 ...
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1answer
115 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 ...
1
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1answer
381 views

Shortened Birkat Hamazon

I see mentions of a short version of Birkat Hamazon ("Birkat Hamazon Hakatzar"). R Yitzchak Abadi wrote one "based on the Rambam and other Rishonim", R Yosef Eliyahu Henkin is mentioned here as having ...

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