Questions tagged [time]
For questions relating to time.
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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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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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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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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When can you build the sukkah?
My wife and I love the holiday of Sukkot, as do many of our friends. We build the sukkah every year and have friends over for an evening meal, preferably on Shabbes - if someone else in our group of ...
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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?
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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 (...
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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 ...
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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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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?
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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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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 ...
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Where does the notion 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 ...
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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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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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How do people daven so quickly, and what's the support for it?
I learned that one must clearly enunciate every word of tefila. At the least this would include Shemoneh Esreh and Shema, but one might presume it includes the entire prayer service. This question ...
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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 ...
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Tashmish Ha-Mitah B'yom (Marital Relations by day.)
It says in Shulchan Aruch Siman 240 Sif 11 that it's prohibited to have marital relations by day unless the house is dark ("Bayis Afel".) The Rema adds that a Talmid Chacham that covers himself with ...
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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?
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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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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 ...
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How did Jacob manage to have 12 children in 7 years?
Did Leah manage to have 6 sons and 1 daughter in the space of 7 years or was it over a longer period of time?
In general it seems difficult to fit all of Ya'akov's children into a 7 year period. ...
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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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Waiting Between Meat & Dairy According To The Geonim
It seems as though the Geonim - although disparate and diverse in their opinions on many issues - seem to be rather united on the understanding of the Gemara on the subject of waiting after meat ...
user3342
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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 '...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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Rishonim/Achronim time period differentiation
When was the end of the Rishonim time period and the start of the achronim time period? Who, what, why, and how did this come about? What caused this abrupt change in deemed mental and halachot ...
user3306
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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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Rav Moshe and Giving Your Time for Charity
I recall hearing that Rav Moshe Feinstein rules that one should donate a tenth of his time to learn with other Jews, in addition to the more commonly accepted 'tithe' of money. The only source I was ...
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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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What took 8 days
What took the Jews 8 days to produce new oil when rededicating the Temple in the Chanuka story? It seems the process of oil-making takes a lot less time (I have done it in Israel on one of the tourist ...
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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 ...
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Drinking from a drinking fountain throughout the day
This question deals with someone who has a cup of a drink and carries it around all day long, possibly refilling it, etc. I am wondering, for someone who drinks from a drinking fountain every time he ...
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Why is the total count of Noah's life 950 years when the year of the flood took a full year cycle?
The Posuk says that Noah was 600 years when he went into the Teivah (Bereshit 7:6,11). Rashi (Bereshit 8:14) and the rest of the Mefarshim say that the flood took an entire year to complete. The Posuk ...
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Issues with starting work before Shacharis
What are the halachic issues/opinions/options regarding starting work early, i.e. before one is allowed or practically able to daven Shachris?
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