4
votes
2answers
98 views

Shabbat with time dilation in space

I know there is some discussion in space/planets.. How would you keep shabbos in space? The Rabbi I asked this shabbat pretty much said the same thing; and you go by Jerusalem time when in doubt. ...
2
votes
2answers
113 views

Can Jews standing naval watches take their shabbat in shifts?

Suppose you have an major naval ship (aircraft carrier or nuclear sub) with a small complement of Jews on board. They're divided by the executive officer to stand watches, same as the rest of the ...
9
votes
1answer
326 views

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?
2
votes
0answers
118 views

Am I allowed to wear my Pebble Watch on Shabbat? [duplicate]

The Pebble is a smart watch that connects to a smart-phone via Bluetooth and can deliver messages to your wrist. Am I allowed to wear it on Shabbat if I disconnect it from my phone? Think of it, then, ...
3
votes
1answer
139 views

How can you keep Shabbos till Tuesday?

I have heard that there are people who keep Shabbos till Tuesday. I would like to understand how that works practically. A few examples of puzzling situations: What shmoneh esrei does such a person ...
6
votes
1answer
81 views

What if you undo a shabbat melacha?

If you plant a seed shortly before the end of shabbat (zoraya) and then un-bury it after shabbat, or you put an uncooked food into an oven and then take it out within seconds without it having baked ...
3
votes
0answers
45 views

“Yichud L'Olam” in Hilchos Muktzeh

In Hilchos Muktzeh we find there is an idea that even a rock ("evan") one can be m'yached (set aside) for a certain purpose allowing one to move it around on Shabbos (See SA OC Siman 308 Sif 22.) ...
7
votes
3answers
86 views

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 ...
9
votes
2answers
329 views

Using an oven timer on Shabbas

This is my first post here. I'm fairly familiar with cooking on Shabbat, but I have a few specific questions. I know there are issues with using the warming setting on an oven to keep food warm. ...
9
votes
2answers
208 views

Wearing a gold watch on shabbos without an eiruv

The halocho is a person may wear jewellery in the street on shabbos without an eiruv provided the reason why he is wearing it is for the adornment of it and not some other use. Therefore the poskim ...
11
votes
1answer
455 views

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 ...
5
votes
2answers
131 views

How often is it neccessary to check the strings of an Eruv?

If you have an Eruv Chatzeros for carrying, how often is it necessary to check it to make sure that it is properly strung and you can still carry on Shabbos?
11
votes
2answers
668 views

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 ...
6
votes
2answers
352 views

Alarm clock handling on Shabbos

Are you allowed to touch an alarm clock on Shabbos?
3
votes
1answer
414 views

Self-winding wristwatches on Shabbos

Can self-winding wristwatches be used on Shabbos?