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Parsing this market hours data, we have early closes at 1pm for US equities on:

"earlyCloses": {
    "7/3/2000": "13:00:00",
    "7/3/2001": "13:00:00",
    "7/5/2002": "13:00:00",
    "7/3/2003": "13:00:00",
    "7/3/2006": "13:00:00",
    "7/3/2007": "13:00:00",
    "7/3/2008": "13:00:00",
    "7/3/2012": "13:00:00",
    "7/3/2013": "13:00:00",
    "7/3/2014": "13:00:00",
    "7/3/2017": "13:00:00",
    "7/3/2018": "13:00:00",
    "7/3/2019": "13:00:00",
    "11/26/1999": "13:00:00",
    "11/24/2000": "13:00:00",
    "11/23/2001": "13:00:00",
    "11/29/2002": "13:00:00",
    "11/28/2003": "13:00:00",
    "11/26/2004": "13:00:00",
    "11/25/2005": "13:00:00",
    "11/24/2006": "13:00:00",
    "11/23/2007": "13:00:00",
    "11/28/2008": "13:00:00",
    "11/27/2009": "13:00:00",
    "11/26/2010": "13:00:00",
    "11/25/2011": "13:00:00",
    "11/23/2012": "13:00:00",
    "11/29/2013": "13:00:00",
    "11/28/2014": "13:00:00",
    "11/27/2015": "13:00:00",
    "11/25/2016": "13:00:00",
    "11/24/2017": "13:00:00",
    "11/23/2018": "13:00:00",
    "11/29/2019": "13:00:00",
    "11/27/2020": "13:00:00",
    "11/26/2021": "13:00:00",
    "11/25/2022": "13:00:00",
    "12/24/2001": "13:00:00",
    "12/24/2002": "13:00:00",
    "12/24/2003": "13:00:00",
    "12/26/2003": "13:00:00",
    "12/24/2007": "13:00:00",
    "12/24/2008": "13:00:00",
    "12/24/2009": "13:00:00",
    "12/24/2012": "13:00:00",
    "12/24/2013": "13:00:00",
    "12/24/2014": "13:00:00",
    "12/24/2015": "13:00:00",
    "12/24/2017": "13:00:00",
    "12/24/2018": "13:00:00",
    "12/24/2019": "13:00:00",
    "12/24/2020": "13:00:00"
  }

I am trying to understand what happens with after-market with an early close - is there any after hours trading or the market stops exactly at 1pm?

I'm looking for a definitive link if possible - unofficial snippets I have seen state either 1:15pm or 5pm for the after-market on an early close.

Appreciate the confirmation.

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