{
  "id": 71435,
  "title": "There is something weird with dates or did I miss something ? ",
  "url": "/competitions/PLAsTiCC-2018/discussion/71435",
  "author_name": "",
  "post_date": "2018-11-13T17:18:14.825599300Z",
  "votes": 2,
  "comment_count": 4,
  "views": 0,
  "content": "<p>According to NASA, today, 18:00 UTC time, MJD (Modified Julian Date) value  is  :   58435.75.</p>\n\n<p>Well ! </p>\n\n<p>First MJD record in train file (object_id 615)  is : 59750.42, which should be 2022-06-20 12:08:58 (June 20th  2022). </p>\n\n<p>My script gives me the same date, according to documentation provided by Kaggle : MJD conversion to UNIX epoch can be done as  (MJD-40587)*86400.</p>\n\n<p>Are we predicting future observation or did I miss something ? </p>\n\n<p>Link to NASA</p>",
  "messages": [
    {
      "id": "420471",
      "postDate": "11/13/2018 17:18:14",
      "content": "<p>According to NASA, today, 18:00 UTC time, MJD (Modified Julian Date) value  is  :   58435.75.</p>\n\n<p>Well ! </p>\n\n<p>First MJD record in train file (object_id 615)  is : 59750.42, which should be 2022-06-20 12:08:58 (June 20th  2022). </p>\n\n<p>My script gives me the same date, according to documentation provided by Kaggle : MJD conversion to UNIX epoch can be done as  (MJD-40587)*86400.</p>\n\n<p>Are we predicting future observation or did I miss something ? </p>\n\n<p>Link to NASA</p>",
      "rawMarkdown": "According to NASA, today, 18:00 UTC time, MJD (Modified Julian Date) value  is  : \t58435.75.\n\nWell ! \n\nFirst MJD record in train file (object_id 615)  is : 59750.42, which should be 2022-06-20 12:08:58 (June 20th  2022). \n\nMy script gives me the same date, according to documentation provided by Kaggle : MJD conversion to UNIX epoch can be done as  (MJD-40587)*86400.\n\nAre we predicting future observation or did I miss something ? \n\n[Link to NASA][1]\n\n\n  [1]: https://heasarc.gsfc.nasa.gov/cgi-bin/Tools/xTime/xTime.pl?time_in_i=2018-11-13%2018%3A00&amp;time_in_c=&amp;time_in_d=&amp;time_in_j=&amp;time_in_m=&amp;time_in_sf=&amp;time_in_wf=&amp;time_in_sl=&amp;time_in_sni=&amp;time_in_snu=&amp;time_in_s=&amp;time_in_h=&amp;time_in_sz=&amp;time_in_ss=&amp;time_in_sn=×ys_in=u×ys_out=u&amp;apply_clock_offset=yes",
      "votes": null
    },
    {
      "id": "420476",
      "postDate": "11/13/2018 17:31:15",
      "content": "<p>The dates are in the future. The data are simulated for when the LSST will be online; it's under construction now.</p>",
      "rawMarkdown": "The dates are in the future. The data are simulated for when the LSST will be online; it's under construction now.",
      "votes": null
    },
    {
      "id": "420505",
      "postDate": "11/13/2018 18:28:53",
      "content": "<p><a href=\"/sohier\">@sohier</a></p>\n\n<p>Thanks for your quick answer...</p>\n\n<p>Ok ! So, dates are future dates, and train data observations flux, flux_err, passband, detected... too ? </p>\n\n<p>If yes, I don't understand how did you get those informations.</p>",
      "rawMarkdown": "sohier\n\nThanks for your quick answer...\n\nOk ! So, dates are future dates, and train data observations flux, flux_err, passband, detected... too ? \n\nIf yes, I don't understand how did you get those informations.",
      "votes": null
    },
    {
      "id": "420516",
      "postDate": "11/13/2018 18:52:01",
      "content": "<p>The training set is also simulated.</p>",
      "rawMarkdown": "The training set is also simulated.",
      "votes": null
    },
    {
      "id": "420522",
      "postDate": "11/13/2018 19:05:49",
      "content": "<p>Thanks again ! </p>\n\n<p>So we have to emulate a simulation:-)</p>\n\n<p>Better to know we are \"back to the future\".</p>",
      "rawMarkdown": "Thanks again ! \n\nSo we have to emulate a simulation:-)\n\nBetter to know we are \"back to the future\".",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 420476,
      "author_name": "sohier",
      "author_url": "",
      "post_date": "11/13/2018 17:31:15",
      "content": "<p>The dates are in the future. The data are simulated for when the LSST will be online; it's under construction now.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 420505,
      "author_name": "pfichou",
      "author_url": "",
      "post_date": "11/13/2018 18:28:53",
      "content": "<p><a href=\"/sohier\">@sohier</a></p>\n\n<p>Thanks for your quick answer...</p>\n\n<p>Ok ! So, dates are future dates, and train data observations flux, flux_err, passband, detected... too ? </p>\n\n<p>If yes, I don't understand how did you get those informations.</p>",
      "votes": null,
      "replies": [
        {
          "id": 420516,
          "author_name": "sohier",
          "author_url": "",
          "post_date": "11/13/2018 18:52:01",
          "content": "<p>The training set is also simulated.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 420522,
          "author_name": "pfichou",
          "author_url": "",
          "post_date": "11/13/2018 19:05:49",
          "content": "<p>Thanks again ! </p>\n\n<p>So we have to emulate a simulation:-)</p>\n\n<p>Better to know we are \"back to the future\".</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "420471": "According to NASA, today, 18:00 UTC time, MJD (Modified Julian Date) value  is  : \t58435.75.\n\nWell ! \n\nFirst MJD record in train file (object_id 615)  is : 59750.42, which should be 2022-06-20 12:08:58 (June 20th  2022). \n\nMy script gives me the same date, according to documentation provided by Kaggle : MJD conversion to UNIX epoch can be done as  (MJD-40587)*86400.\n\nAre we predicting future observation or did I miss something ? \n\n[Link to NASA][1]\n\n\n  [1]: https://heasarc.gsfc.nasa.gov/cgi-bin/Tools/xTime/xTime.pl?time_in_i=2018-11-13%2018%3A00&amp;time_in_c=&amp;time_in_d=&amp;time_in_j=&amp;time_in_m=&amp;time_in_sf=&amp;time_in_wf=&amp;time_in_sl=&amp;time_in_sni=&amp;time_in_snu=&amp;time_in_s=&amp;time_in_h=&amp;time_in_sz=&amp;time_in_ss=&amp;time_in_sn=×ys_in=u×ys_out=u&amp;apply_clock_offset=yes",
    "420476": "The dates are in the future. The data are simulated for when the LSST will be online; it's under construction now.",
    "420505": "sohier\n\nThanks for your quick answer...\n\nOk ! So, dates are future dates, and train data observations flux, flux_err, passband, detected... too ? \n\nIf yes, I don't understand how did you get those informations.",
    "420516": "The training set is also simulated.",
    "420522": "Thanks again ! \n\nSo we have to emulate a simulation:-)\n\nBetter to know we are \"back to the future\"."
  },
  "source": "meta"
}