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18

You sure you want to open up this can of worms? :-) Here's the situation. There is no explicit mention of any such concept in the Torah, Talmud, or adressed by the Rambam, the Rosh, the Tur, or the Shulchan Aruch. The first time this really became an issue when during WWII when yeshiva students (notably those from Mir and Chachmei Lublin) relocated from ...


14

You end your fast when it becomes dark, independent of how long you have been already fasting. Source: Igrot Moshe OC 3:96 See also Shevet HaLevi 8:261:2 who argues and says to stop based on you original location's times. It's not clear if he would hold this lechumra as well.


13

With regards to the earliest you can make the Eruv on Erev Yom Tov (your actual question), The Nitei Gavriel (Laws of Yom Tov II 81:10) says you can even make it the whole day, even in the morning (meaning not the night before). In the footnotes he explains none of the earlier authorities address this issue, but it appears that it is better to wait till ...


12

The Talmud (Pesachim 54b) states that only for Tisha bAv must we be stringent for Bein Hashemashot. There is an opinion in Rishonim that only regarding the Bein Hashemashot at the beginning of the day is Tisha bAv unique, but all fasts require being stringent at the end because we have to wait until it is certainly night to uproot the current status (chazaka)...


11

There are a few things that are not affected by Shaos Zemaniyos. Waiting time between eating meat and milk - you wait the amount of actual hours your Minhag is. Mazalos are also not affected by Shaos Zemaniyos and the Mazal of Maadim is between 6-7 PM during standard time and between 7-8 PM during daylight time. Please see this link from Medrash Shocher ...


11

Shulchan Aruch O.C. 672:2 שכח או הדד ולא הדליק [....] ומיהו הני מילי לכתחילה; אבל אם עבר זה הזמן ולא הדליק, מדליק והולך כל הלילה. ואם עבר כל הלילה ולא הדליק, אין לו תשלומין If one forgot and didn't light, or purposefully didn't light [....] however, this is only lechatchila; if [the end of sunset] has passed and one didn't light, they should light ...


10

The reason why we light candles a few minutes early (18 minutes) is in order to avoid any possibility of starting Shabbat late. Think of it as a train leaving the station. If you're one minute late, you missed it. By the way, though most communities light Shabbat candles 18 minutes before sunset, local custom may vary. For instance in Jerusalem, the custom ...


10

Only Yom Kippur and Tisha b'Av are 25-hour fasts. The others are minor fasts, from dawn (first light, before sunrise) until nightfall (full dark). The minor fasts are: Fast of Gedaliah (3 Tishrei) 10 Tevet Fast of Esther (13 Adar) Fast of the Firstborn (for those to whom it applies) (14 Nisan) 17 Tamuz You can read more about these fasts at Judaism 101.


9

This affects when Shabbat and yom tov start and end and when you can perform time-bound mitzvot. There are various opinions (some collected here), so this is something you need to consult your rabbi on. Opinions cited there include: use the times for your home city (if you're visiting); use 6PM; use the point when the sun is at its lowest in the sky. I ...


9

I live in Sydney Australia and I can say definitively that yes the custom is to stay up all night and learn on Shavuot night. I have never heard the suggestion that staying up all night is related to the time of sunrise/sunset at that time of year. I have many friends in South Africa and can say that they have the same custom as well. My inclination is that ...


9

Maimonides (Mishneh Torah, Laws of Prayer, Chapter 1) outlines the basic obligations of prayer. He writes that originally there was no fixed prayers, only an obligation to pray somewhat every day. Everyone would pray different amounts based on how 'inspired' they were. After the destruction of the Jewish Kingdom by the Babylonians (586 BCE), the Sages of ...


9

YU Torah online has a good summary. The subject is disputed by the Vilna Gaon and Rabbeinu Tam. The first allows only up till sunset; the second up to when the stars appear. Mishna Berurah 233:14, limits the leniency to recite Mincha until tzeit hakochavim. He cites the opinion of P'ri Megadim, Eshel Avraham 233:7, who rules that one cannot ...


9

Ultimate Zmanim for iOS has that feature. With Zmanim Alarms, Ultimate Zmanim can remind you of important zmanim throughout the day. Shema, Tefila, and weekly candle lighting are all covered. (To forewarn the question, on Android, Halachic Times is an equivalent).


8

It is well know that there is a disagreement whether one should light Channuka candles at sunset or at tzet hakochavim. However, the basis for this disagreement is less known, and this I will try to clarify. The Gemara (Shabbat 21b) states that one should light candles "mishtishka hachama". This expression appears in other places in shas as well including in ...


8

The source for this is Hayom Yom, entry for 22 Nissan. R' Michoel Aharon Seligson, who has written extensively on Hayom Yom, suggests (Kovetz Haoros Ubeurim 936, Acrobat page 216) that this is in order to fit in the two daytime meals needed on this day (the regular Yom Tov meal, and "Moshiach's Seudah"). So the kiddush (with matzah balls or something ...


8

The MA holds that we split up the 12 hours of a day from Alot HaShachar (the beginning of day) to Tzeit HaKochavim (the end of the day). The Gra holds that the 12 hours are split from sunrise to sunset independent of what is considered day or night. All agree that noon must be when the sun is highest in the sky. (This can be proven from the gemara that says ...


8

The proprietors of goDaven were kind enough to supply me, for the purposes of answering this question, with their table of 5,960 mincha and/or maariv services. I used a Perl script to extract 1,046 where weekday mincha both preceded maariv and was listed as a certain number of minutes before sunset, p'lag, tzes, or candle-lighting time. Because some times ...


8

Rabbi Yosef Avraham Heller, the Rosh Kollel of Crown Heights, Brooklyn and former member of the Beis Din there, wrote a essay explaining the Halachic justification for davening after Chatzos, published in "Kobetz Beis Chayenu" 11 Nissan 5760 pg. 28. The crunch of the explanation is as follows: The Gemora (Brochos 26a) states that, "He may go on praying [...


8

According to Rabbi Shlomo Fisher on ohr.edu, someone flying is exempt from lighting, because the rule is one candle per household ("נר איש וביתו;" Shabbos 21b); and if there's no one at home then there is no obligation to light.


8

The Be'er Hetev that you quote says that if Saturday night is before the third of the month, Kiddush Levana should be pushed off to the next Saturday night because it will still be before the 11th of the month (and we don't usually push off Kiddush Levana to Saturday night if it will be after the 11th of the month for fear of a few days of clouds). But he ...


8

In Talmud Bavli Rosh Hashanna 20b, R' Zeira quotes R' Nachman as saying: כ"ד שעי מכסי סיהרא לדידן שית מעתיקא ותמני סרי מחדתא לדידהו שית מחדתא ותמני סרי מעתיקא For 24 hours, the [moon] light is covered: For us [in Babylon] - 6 of the old [month] and 18 of the new [month]; for them [in Jerusalem] - 6 of the new and 18 of the old. (Translation mine, ...


8

No it cannot. In fact, one cannot even recite shema twice in the period between alot hashachar and hanetz hachamah to count for the evening and morning readings. Shulchan Aruch Orach Chaim 58:5: אם נאנס ולא קרא ק"ש ערבית עד שעלה עמוד השחר כיון שעדיין לא הנץ החמה קורא ק"ש ויוצא בה ידי חובת קריאת שמע ערבית ואם היה אנוס באותה שעה לצאת לדרך מקום גדודי חיה ...


7

Again. If living someplace where there is no concept of sunrise/sunset at all, the opinions are: Follow your hometown Follow the last normal place you'd been (in this case, Florida) Follow Jerusalem Follow an artificial 6AM-6PM clock, using whatever timezone you have.


7

See this article (Hebrew pdf) arguing for the "need not wait" position. The Rishonim and Shulchan Aruch never said to wait; when Shulchan Aruch describes the order of prayers for Shavuos, it doesn't say anything about waiting. The note to wait appeared later (and appears in Be'er Heitev OC 494 as "the Achronim have written"), and was not agreed upon by all. ...


7

It refers to "mean noon," as opposed to "solar noon." True solar noon is when the sun crosses the imaginary meridian in the sky between east and west, i.e., when the sun is exactly in the south. The time this occurs varies slightly every day due to a number of factors; the variation is known as the "equation of time." (See here for an excellent explanation ...


7

This is the psak of Rabbi Yisrael Meir Kagan in the third Biur Halacha on Siman 58. Of course when davening alone, it is still advisable to go to a minyan later to hear all the dvarim shebekdusha that you missed, like kaddish, kedusha, barchu, and keriyat hatorah.


7

Shabbat starts no later than sunset (Shulchan Aruch, Orach Chayim 293:2). Sunset is a subjective phenomenon describing the apparent descent of the Sun below the horizon. It happens because the Earth is round and rotates about its own axis much more quickly than it revolves around the Sun, so observers on its surface observe, once per rotation, their part of ...


7

The Mishna Berura rules that one should not start mincha if they will not finish Shemoneh Esreh before shkia (sunset), but many rely on Rabenu Tam's time and daven considerably later. I was told by my rav to omit tachanun if davening later than allowed by the M"B. Shachris can technically be davened until chatzos (halachic midday) but it really ought to be ...


7

Kitzur Shulcah Aruch1 17:1 says of the Sh'ma: After a third of the day has passed, one should recite the Shema alone, without the blessings, because it is forbidden to recite the blessings beyond this time. The Shema itself, though, may be recited the entire day. (Other authorities also allow the recitation of the blessings throughout the day.) A ...


7

As long as we stay well (Stockholm is 7°/800 km/500 mi) south* of the polar circle, there will always be a sh'kia and a netz . Therefore, all zmanim can be calculated. Even a tzeis and an alos can be calculated by relying on the opinion that they occur a fixed number of minutes* (e.g. 72) after shkia and before tzeis. Let's take some practical examples: On ...


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