{
  "export": {
    "source": "https://urth.darkrealm.vip/thread/urth/6009",
    "note": "Exported from an unofficial mirror of a public mailing list. Copyright in each message remains with the person who wrote it.  Email addresses are obscured as `user at host`, the form the original archive published. This file was rebuilt from parsed fields rather than retained headers, so it is faithful in content but not byte-exact.",
    "addresses": "obscured as 'user at host'"
  },
  "archive": "urth",
  "thread": {
    "id": 6009,
    "subject": "sundials",
    "messages": 1,
    "voices": 1,
    "first": "2011-05-13T15:30:43+00:00",
    "last": "2011-05-13T15:30:43+00:00"
  },
  "messages": [
    {
      "message_id": "<4DCD4EA3.40007@irit.fr>",
      "from": {
        "name": "Sergei SOLOVIEV",
        "address": "soloviev at irit.fr"
      },
      "date": "2011-05-13T15:30:43+00:00",
      "subject": "(urth) sundials",
      "in_reply_to": null,
      "reply_link": null,
      "blocks": [
        {
          "kind": "text",
          "depth": 0,
          "text": "I agree  with Dan - and even more so. The impossibility of this follows not from\nthe 24 hours cycle, but from the fact that different worlds have different Suns.\nSundials to some extent can be used to show time in different time\nbelts of the same planet. To some extent - because they are limited\nto day time, and not to 24 hours cycle, they cannot display shadow (and time)\nwhen the Sun is behind the planet itself.\n\nFor different planets of the same Sun you need a perfect synchronization\nin planet rotation.\n\nbest\n\nSergei\n\n \nLe Jeudi 12 Mai 2011 18:34 CEST, \"Dan'l Danehy-Oakes\" <danldo at gmail.com> a ?crit: "
        },
        {
          "kind": "quote",
          "depth": 2,
          "text": "On Thu, May 12, 2011 at 9:30 AM, Gwern Branwen <gwern0 at gmail.com> wrote:"
        },
        {
          "kind": "quote",
          "depth": 4,
          "text": "It occurred to me that the sundials probably date back to Urth's\ninterstellar empire if not earlier. Maybe they tell times on different\n*worlds*."
        },
        {
          "kind": "quote",
          "depth": 2,
          "text": "    \n\nI don't see how you could do that - a sundial is limited to a 24-hour\ncycle (during about half of which it isn't showing anything).\n\n-- \nDan'l Danehy-Oakes\n_______________________________________________"
        }
      ]
    }
  ]
}