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    Re: Internation Date Line
    From: Doug Faunt
    Date: 2021 Dec 31, 11:08 -0800
    I'm involved in a NY Zoom of science fiction fans that started for NY in Kiritimati and will end about 26 hours later, with the end being Baker Island.  It turns out, I've been to both those places.
    Best, doug


    On Fri, Dec 31, 2021, 10:01 Frank Reed <NoReply_FrankReed@fer3.com> wrote:

    There will be plenty of chatter today about the international date line. The Wikipedia article has one key section: https://en.wikipedia.org/wiki/International_Date_Line#Cartographic_practice_and_convention. Bottom line: the nautical date line is just 180° of longitude. That's what one is expected to use at sea (but it's really up to the captain, etc.), and that practice pre-dates the international agreements usually cited. You cross 180° heading west, you drop a day from your log... Cross it eastbound, you repeat a day. The famously contorted date line that we have seen on numerous maps and globes, like the one attached below, does not exist. It has no formal status. It is a mapmakers' convenience, a crude representation of the local laws in various island groups in the Pacific. Its borders are not official by any measure, and they are in many ways misleading.

    Frank Reed

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