Polar Zmanim On The Antarctic Cruise

[Matovu]

So what months is best time for Antarctica, December? Jan/Feb? what are your thoughts on last minute half prices buying the cruise tickets in Ushuaia last minute? I'm googling it is a big hit or miss and don't mind to sit around Ushuaia for a few days to save $5000.

And after reading some reports from SF I think Falkland Islands is not to be missed when choosing a cruise.

From the Moment it seems that they made sure to go at a time that they had a night of about 20 minutes. Some months there's no night at all making it more complicated halachacally...
Or did Innot read it correctly?

[Something Fishy]

From the Moment it seems that they made sure to go at a time that they had a night of about 20 minutes. Some months there's no night at all making it more complicated halachacally...
Or did Innot read it correctly?

There was no night at all.

The 20 minute comment was that regarding sunset, all shitos came to within around 20 minutes of each other so it was easy to be machmir.

[Matovu]

There was no night at all.

The 20 minute comment was that regarding sunset, all shitos came to within around 20 minutes of each other so it was easy to be machmir.

When you have time, can you please expand on this ?

[Dan]

I can write a book on the research I did into the sunset issues.
@dirah was a massive help sorting things out. Would be great if he can share more.

[shapsam]

In the article SF says he's planning to do it again.

[Matovu]

I can write a book on the research I did into the sunset issues.
@dirah was a massive help sorting things out. Would be great if he can share more.

Was all this discussed publically in the private threads for this trip?

[Dan]

Nope.

[Matovu]

Nope.

One shita written in the article.
6 years weekday, and 1 whole year shabbos...
So interesting.

[davidrotts63]

I can write a book on the research I did into the sunset issues.

If all else fails...

[ah giten]

Same shaala when traveling to HKG on the polar route and night doesn't fall, Summer, or the sun doesn't rise, winter, and you arrive two days later...

[Something Fishy]

One shita written in the article.
6 years weekday, and 1 whole year shabbos...
So interesting.

That's the Minchas Elezar's shita.

[ah giten]

One shita written in the article.
6 years weekday, and 1 whole year shabbos...
So interesting.

its not that weird when you look at the explanation.
day and night depends on sunrise and sunset, so if that only happens once a year, then a year = a day.
so yes, it'll take 7 years for a week.

[cmey]

its not that weird when you look at the explanation.
day and night depends on sunrise and sunset, so if that only happens once a year, then a year = a day.
so yes, it'll take 7 years for a week.

Does that really only happen once a year all around the area near the pole, or does the sun make several passes skimming  below and above the horizon around the equinox in those areas away from the exact pole?

[Zevi16]

If anyone is really interested, pm me and I’ll ask a family member for a psak. He has sforim on it and he travels the world too so he knows every zman and shita for every longitude and latitude

[Matovu]

If anyone is really interested, pm me and I’ll ask a family member for a psak. He has sforim on it and he travels the world too so he knows every zman and shita for every longitude and latitude

Lot's of us, me included are interested in reading up on this fascinating halachic discussion.

[Dan]

For where we were going, the only shayla was for Lubavitchers.

R' Kotler gave a shiur and printed a booklet on the polar zmanim issue and the kula he was going to use for the fast based on the various dayos, but I noted to the group that it was all based on there not being a sunset, which there was for our entire trip.

[ExGingi]

For where we were going, the only shayla was for Lubavitchers.

Especially since the Rebbe is a know "fan" of the Minchas Eluzar. 

[Dan]

Especially since the Rebbe is a know "fan" of the Minchas Eluzar. 

The Rebbe's shita was seemingly the Ben Ish Chai or the Moadim U’Zmanim.

However the main shayla I had for this trip was a machlokes among Chabad Rabonim about the Alter Rebbe's shita with regards to Shika Haniris vs Shkia Amitis.
In the end we diverted for fuel and never wound up far enough south where we would have a Shika Haniris and not a Shkia Amitis, so it was a moot point.

[MeirS]

The Rebbe's shita was seemingly the Ben Ish Chai or the Moadim U’Zmanim.

However the main shayla I had for this trip was a machlokes among Chabad Rabonim about the Alter Rebbe's shita with regards to Shika Haniris vs Shkia Amitis.
In the end we diverted for fuel and never wound up far enough south where we would have a Shika Haniris and not a Shkia Amitis, so it was a moot point.

I've been a Zmanim enthusiast for many years now and was well aware of the שקיעה אמיתית concept but it seems like it's only recently that it's becoming mainstream to use it for calculating regular Zmanim such as סוף זמן קריאת שמע and פלג המנחה Lechumra.
I'm fascinated by how it changes during the year.
According to my research the day is extended by anywhere between 7.8 and 9.2 minutes.
I'd be interested in reading more about it.

[Dan]

I've been a Zmanim enthusiast for many years now and was well aware of the שקיעה אמיתית concept but it seems like it's only recently that it's becoming mainstream to use it for calculating regular Zmanim such as סוף זמן קריאת שמע and פלג המנחה Lechumra.
I'm fascinated by how it changes during the year.
According to my research the day is extended by anywhere between 7.8 and 9.2 minutes.
I'd be interested in reading more about it.

The difference between Shkia Haniris and Shkia Amitis is much greater in polar regions. The zmanim varied by as much as 30 minutes IIRC.

For our purposes, the consensus from nearly everyone is that Shabbos starts at Shkia and ends at Alos on Sunday. However, what if you only have Shkia Haniris and not Shkia Amitis? For our dates this could have happened between the latitudes of 65.17 and 66.
Do you start Shabbos at Shkia Haniris? When do you switch to a Polar Model of zmanim such as the Ben Ish Chai? How does Chabad hold for the Polar zmanim?