How should a Jew observe the Sabbath if he is on a ship that crosses the Arctic Circle from north to south during that day?

sportsherald

?? I know I responded to this before, as did a couple of others. ?? This is also similar to Ask FT Question #109284. My previous answer provided a link that described a practical approach in summer of using the lowest dip of the sun (during 24 hour days) as the "sunset." http://zaklad-tzfat.com/barrowsh.htm Since this question involves travel southward across the Arctic Circle, however, the ship would be leaving the zone of 24-hour-a-day summer sun, i.e. the sun would set for that ship. This would also solve the winter issue, of the sun never even rising in a 24 hour period above the Arctic Circle. Thus, in either case, the Jewish sailor would encounter a sunset. More on the Sabbath in polar regions is found at http://en.wikipedia.org/wiki/Jewish_law_in_the_polar_regions, which includes: "Rabbi Israel Lipschutz, in his commentary Tiferet Yisrael, writes that in polar regions there is a 24-hour day, as evidenced by the fact that the sun rotates in the sky from a high point at noon to a low point near the horizon at midnight. He does not offer a means of measuring the passage of a 24-hour day during the polar winter when the sun is invisible. He advises that a Jewish traveler observe the beginning and end of the Sabbath based on the clock of the location whence he came. It is unclear whether this refers to his residence or his port of embarkation. A result of this view is that two Jews who leave from different cities will always observe Shabbat on Saturday, but at different times. A Jew who leaves from America will observe the Sabbath according to the clock of his hometown, while a Jew from Europe will use the clock of his European hometown, which begins and ends Sabbath about five hours earlier than in America. Thus, there is no uniquely identifiable beginning and end of the day in the polar regions." Feb 01 12, 9:35 PM