master.xml

<data>
  <angel-for-a-day>
<section id="18" handle="angel-for-a-day">Angel For a Day</section>
<entry id="185">
<anon>Yes</anon>
<title handle="rthhfdghdf">rthhfdghdf</title>
<dates>
<date timeline="1" type="exact">
<start iso="2017-07-06T00:00:00+01:00" timestamp="1499295600" time="00:00" weekday="4" offset="+0100">2017-07-06</start>
</date>
</dates>
</entry>
<entry id="184">
<anon>No</anon>
<title handle="bob">Bob</title>
<dates>
<date timeline="3" type="exact">
<start iso="2017-07-28T00:00:00+01:00" timestamp="1501196400" time="00:00" weekday="5" offset="+0100">2017-07-28</start>
</date>
<date timeline="1" type="range">
<start iso="2017-07-05T00:00:00+01:00" timestamp="1499209200" time="00:00" weekday="3" offset="+0100">2017-07-05</start>
<end iso="2017-07-08T00:00:00+01:00" timestamp="1499468400" time="00:00" weekday="6" offset="+0100">2017-07-08</end>
</date>
<date timeline="2" type="range">
<start iso="2017-07-19T00:00:00+01:00" timestamp="1500418800" time="00:00" weekday="3" offset="+0100">2017-07-19</start>
<end iso="2017-07-20T00:00:00+01:00" timestamp="1500505200" time="00:00" weekday="4" offset="+0100">2017-07-20</end>
</date>
</dates>
</entry>
</angel-for-a-day>
</data>

master.xsl

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

  <xsl:import href="http://www.getsymphony.com/download/xslt-utilities/source-code/64195/"/>
  
  <xsl:output method="xml" indent="yes" />

  <xsl:template match="/">
    [
<xsl:for-each select="//data/angel-for-a-day/entry">
<xsl:for-each select="dates/date">
{
<xsl:choose>
<xsl:when test="ancestor::entry/anon='No'">
title:
<xsl:value-of select="ancestor::entry/title"/>
</xsl:when>
<xsl:otherwise>title: anon</xsl:otherwise>
</xsl:choose>
, start:
<xsl:value-of select="start"/>
,
<xsl:if test="@type='range'">
end:
<xsl:value-of select="end"/>
</xsl:if>
},
</xsl:for-each>
</xsl:for-each>
]
  </xsl:template>

</xsl:stylesheet>