As you might already know, zmanim (for Shabbos, etc.) are determined by a number of factors, one being the elevation of the particular locale. But for some reason, if you check the charts and algorithms for the zmanim of New York (I'm thinking Monsey (elevation 548 feet), specifically), the elevation is not factored into the times. Any idea why this is? I know the difference would be nominal at best, but it's still a difference. We might as well use it, right? Any ideas why we don't?

  • Which algorithms are you looking at?
    – Daniel
    Commented May 17, 2013 at 14:17
  • These zmanim, for instance, do not include elevation: myzmanim.com/day.aspx?vars=US10952
    – WhoKnows
    Commented May 17, 2013 at 15:26
  • This information comes from someone I know who wrote algorithms for Zmanim for Shul websites, and has nowhere seems to use elevation for these places. He was wondering why.
    – WhoKnows
    Commented May 17, 2013 at 15:26
  • @devir. It doesn't really answer your question, but if you open that myzmanim link and click on the picture of the mountains you can set the elevation.
    – Menachem
    Commented May 17, 2013 at 16:56
  • Thanks, yeah I saw that. But as you said, why not factor that in to begin with?
    – WhoKnows
    Commented May 17, 2013 at 18:15


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