Questions related to different times of day as they apply to Jewish Law.

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3
votes
1answer
286 views

eating before kiddush

Is there any time in the early morning on Shabbat in which I can eat and drink something without any question of it being considered eating before davening and kiddush? For example, at 3, 4, or 5 ...
3
votes
0answers
16 views

Time for evening prayer when flying eastward over Greenland and the sun doesn’t set?

(This is the “return" question for my question on the right time for shaharis when encountering sunrise twice in a day) In the summer, when flying from the East Coast to Tel Aviv on an afternoon ...
12
votes
1answer
463 views

Time for morning prayer when flying over Greenland and seeing the sun rise twice

Last year I flew from Tel Aviv to Los Angeles. The flight leaves at night (1am) and, in the winter, lands when it is still night (630am). However during the flight, over Greenland, one sees the sun ...
17
votes
4answers
2k views

Fast days and time zones

If I fly westward on a fast day, and travel through one/several time zone/s, thereby going back in (clock) time, must I then fast until it ends in my current time zone? What if I fly eastward, thereby ...
4
votes
0answers
30 views

R Yonah's position about saying Hashkiveinu before nightfall

The Talmud (Berachot 8b-9a) tell us that the Halacha is according to the opinion that, at least if forced to, one can fulfill his obligation for the night time reading of Shema after dawn before ...
5
votes
2answers
704 views

Calculating shabbat candle lighting time

Is it possible to calculate the candle lighting time based on location and date alone? Assume all you have is a GPS, a watch and a calculator.
0
votes
0answers
10 views

Why do all non-Torah-based fast days except Tish'a B'Av begin only at sunrise? [duplicate]

Yom Kippur is the only fast day explicitly mentioned in the Torah (i.e. - first 5 books). The others are rabbinical. Except for Tish'a B'av which begins at sunset of the 8th of Av, the others begin ...
7
votes
1answer
122 views

Said Kiddush Levana prior to three days after Molad - Does he say it again?

Be'er Hataiv 426:10 says that one can say Kiddush Levana as early as 3 days after the Molad. The Rambam - Hilchos Brachos 10:17 rules that one may say Kiddush Levana immediately after the Molad. ...
7
votes
1answer
201 views

A Jew is born in space. What time rules does he follow?

I know that the title sounds like a sequel to a TV show (Lost in space). But based on a statement in this article : The Rabbis therefore rule that a person should continue to follow the time ...
4
votes
1answer
134 views

Alarm clock in place of a shomer

There is an idea that one can an appoint a shomer (guard) to daven maariv (shma) and some achronim extend this idea to lighting the menorah. What this does is allows one to do work and eat something ...
11
votes
1answer
360 views

Halachic Justifications for the Amshinover Rebbe

The current Amshinover Rebbe in Bayit Vegan, Jerusalem is known in the Jewish world as a man of great piety and for his great knowledge in Torah. He is also known to keep very different "Zmanim"- ...
6
votes
1answer
58 views

Pray hurriedly as soon as time comes for mincha/maariv arrives or wait but pray with more kavanah

Suppose one works in a non-Jewish office environment with rooms that can be used for prayer. Should one wait till one arrives at home and pray Mincha there at leisure or do it at work earlier when ...
2
votes
3answers
136 views

Why do we still blow shofar during mussaf?

The gemarah (rosh hashana 32b) asks why we wait until mussaf to blow the shofar and answers that the ruling enemies of the Jews mistook the shofar sound for a rallying war cry and forbade it. They ...
4
votes
0answers
48 views

Davening mincha after shkia (during “bein hashmoshos”) [duplicate]

I am familiar with the fact that there is a maklokes between poskim if one may daven mincha after shkia during "bein hashmoshos" (however long or what time one holds that to be.) However the opinions ...
2
votes
0answers
26 views

What is considered to be night?

I have always understood the definition of "night" ("leilah") when the day is for sure over and we've passed through "bein hashmoshos" completely, is when there are 3 visible stars and "hiksef elyon ...
7
votes
6answers
3k views

When is the latest time you can daven minchah bedieved?

If you realized that you didn't yet daven minchah and it's past shekiyah, when is the latest that you can begin praying the Amidah? I'm looking for different people's cutoffs.
6
votes
4answers
300 views

In an average shul, how long before sunset does a combined weekday Mincha/Maariv service start?

Many shuls worldwide run combined weekday Mincha/Maariv services. How long before sunset do these services tend to start? Please specify a range, measured in "number of minutes". Also, please cite ...
8
votes
2answers
155 views

Determining times of Halachic import on a long flight

If I'm taking a long flight on an airplane on a day when permitted activities change at a certain point, e.g. with the start or end of a fast day, or with the start of the chametz prohibition kicking ...
3
votes
1answer
44 views

What prayers might be permissible or not permissible to pray before dawn?

I have a question that is similar to this one, but a little different. Like many people, I have a job that I currently have to be at (with location and time of year factored in) at around dawn. Hence, ...
12
votes
2answers
463 views

Polyphasic Sleep and Halacha

I recently read an article on polyphasic sleep and I'm quite interested in experimenting with it. The article advises the Uberman approach which advocates 20-30 minute naps every four hours, meaning ...
2
votes
1answer
51 views

Start time of Jewish holidays: Exactly at sunset or some other time near it?

It's my understanding that Judaism defines the start of a day as sunset. However, on one of my calendars, several Jewish holidays are indicated as starting at sundown (approximate). Does the Jewish ...
2
votes
1answer
73 views

Do any Chasidim still accept Shabbos according to Rabbeinu Tam zman?

Apparently there is a story that Rav Moshe Feinstein asked the Satmar Rebbe to not have his followers begin shabbos with zman Rabbeinu Tam. Is there still a minhag amongst chasidim to take on shabbos ...
3
votes
1answer
139 views

Is it mandatory to eat before solar noon on Rosh Chodesh?

"A person should make sure to eat before the sixth hour on Shabbos, since it is forbidden to fast on Shabbos". --A column by Daniel Yaakov Travis, citing Talmud Yerushalmi, Taanis 3:11. During ...
6
votes
1answer
70 views

Arvit/Maariv “after” Birkot HaShachar?

Generally one prays Arvit before Chatzot HaLayla; Also, one can say Birkot HaShachar as soon as right after Chatzot HaLayla (as far as I understand). I came across a "logical hole" that I can't find ...
2
votes
1answer
138 views

Rambam, Shkiah, and Tzet HaKokhavim

In the dispute between the Geonim and Rabbenu Tam over the definition of nightfall, I have seen the Rambam claimed by either side - each claiming that in the Mishneh Torah he held like them. My ...
1
vote
0answers
56 views

What time does a bar mitzvah come into effect?

At what halachic time does a boy having his bar mitzvah become chayav b'mitzvot? It seems to me that the most likely times are either shkia or tzeit.
-2
votes
2answers
125 views

Can not obeying a Gentile's opinion of Shabbat time cause a Chilul Hashem?

My understanding is that Chilul Hashem - desecrating G-d's name can be caused when Gentiles have a negative opinion about Jews from observing wrong behavior, even if the behavior may be halachically ...
8
votes
2answers
3k views

Davening on Plane Zmanim

How do you know when to daven Shachris on a plane?
2
votes
1answer
65 views

What is the difference between Sfardic and Ashkenazic calculations for the last time to eat chametz?

My community's luach (calendar) has 2 separate times for the last time to eat chametz on Erev Pesach: 10:09 for Ashkenazim, and 10:13 for Sephardim. How are these times calculated according to the ...
1
vote
0answers
53 views

Minyan, netz hachomah, and precision in time

There are halachic sources that discuss the importance of davening shemona esrei at netz (at sunrise), some of which state that it is preferable to daven at netz over davening with a minyan (at least ...
3
votes
1answer
181 views

Timing of Maariv / Havdalah at the end of Shabbos

Is it required that all elements of Maariv / Havdalah at the conclusion of Shabbos come after dusk, or may some part come between sunset and dusk?
1
vote
0answers
48 views

Which “shita” did the 5 rabbis in the Haggadah follow regarding the earliest time for morning Shema?

This section from the Haggadah: Pesach Haggadah, Magid, Story of the Five Rabbis 1: מַעֲשֶׂה בְּרַבִּי אֱלִיעֶזֶר וְרַבִּי יְהוֹשֻׁעַ וְרַבִּי אֶלְעָזָר בֶּן-עֲזַרְיָה וְרַבִּי עֲקִיבָא וְרַבִּי ...
2
votes
1answer
63 views

Which Rishonim held of shkia/tzeis according to the zman of Rabbeinu Tam?

Which Rishonim held of shkia/tzeis according to the zman of Rabbeinu Tam? Ive heard the Shulchan Aruch (rishon/acharon) held of it, did he pasken like for starting shabbos?
5
votes
1answer
241 views

Is there any evidence of time-zones in Talmud? (Tanaim and Amoraim only)

There are many verses in the Talmud, Midrash and Siddur that state that the sun and moon rise and set through gates in the firmament. This would imply that there are no time-zones. To this world view ...
5
votes
3answers
160 views

Flying During Channukah Candle Lighting

Obviously you cannot light candles on a plane, so if you can't light candles within the time frame is there any other activity one could do, which is permissible on an airline, that would fulfill the ...
3
votes
1answer
59 views

Zmanim in Space [duplicate]

If an astronaut is in space, how does he or she determine what time to pray? Does it revolve around where the spaceship is in relation to the sun, or does he just follow zmanim on Earth?
1
vote
1answer
88 views

Hallel before chatzos at seder

I was reading Rav Schwab On Prayer (page 541) where he says the following about the timing of parts of the Seder: According to some poskim, even the recitation of Hallel should be completed before ...
3
votes
2answers
77 views

Why are mincha gedola and ketana named that?

What is big about the earlier mincha time and what is small about the later mincha time? Also, why does the term plag mincha make sense? It would seem to be a term that refers to the point midway ...
4
votes
0answers
52 views

Customs regarding reciting the Shema after the allowed time

The latest time for reciting the קְרִיאַת-שְׁמַע is ׁשׇׁלוֺש ׁשׇׁעוֺת זְמׇנִיּוֺת (three variable hours) after sunrise. On Shabbat, many communities recite the morning Shema after this latest ...
2
votes
1answer
47 views

Why is the mitzvah of tefellin not by night?

Berachos discusses the importance of saying shema while wearing tefellin. Saying shema without tefellin is likened to bringing an incomplete sacrifice (Berachos, 14b). Similiary, one who washes his ...
6
votes
3answers
225 views

Choosing between Brachos on Shma and Sof Zman Kriyas Shema

Let's say Yosef woke up late one day, and by the time he was ready to say kriyas shema, it was two minutes before sof zman kriyas shema (the latest time at which a person could say kriyas shema). He ...
5
votes
2answers
308 views

Bathroom or shema if you only have time for one?

If you wake up 5 minutes before sof zman kryat shema and you have to use the bathroom. Going to the bathroom when necessary is deorayasa (Shulchan Aruch 3:17) and so is saying the shema. Also there ...
3
votes
0answers
56 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 ...
2
votes
2answers
52 views

If צאת is late, then פלג is late. When does one light the מנורה on Friday?

One cannot light the Chanuka lights before p'lag hamincha (Shulchan Aruch 672:1), not even on Friday evening (Mishna B'rura 679:2). If he did so, his lighting is invalid (Shaar Hatziyun 672:4). P'lag ...
6
votes
4answers
97 views

When can Melavah Malkah be eaten until?

When is the last time one can eat a meal on Motzei Shabbos and still have it considered Melavah Malkah? When is the deadline?
4
votes
1answer
206 views

Is the Fast of Tevet considered a 24 hour fast?

Is the Fast of Tevet considered a 24 hour fast, or does it begin in the morning until early evening?
1
vote
0answers
74 views

Following more lenient opinions for fasting times

Related: Until what time in the morning may you eat on a fast day? There are different opinions about exactly when one must start fasting. For someone planning to wake up to eat, all agree that they ...
3
votes
1answer
363 views

Chanuka candles if missed the night

If someone, not on purpose, did not light chanuka candles at night, should he light during the day? With or without a brocho?
2
votes
1answer
208 views

Making up a synagogue calendar manually is tedious work. Which software can do the calculations automatically?

Lots of synagogues print up a customized calendar every year. (Sample.) Such a calendar includes shul-specific information (e.g. service times and maybe a weekly class or two) and general information ...
4
votes
1answer
313 views

Sh'kiya alarm app (iOS)

Since the time-change, I have been rather off in calculating when I should say minchah. Is there an app which has an alarm for sh'kiya (or secular sundown timing if they differ) which is available for ...