A <a href="https://en.wikipedia.org/wiki/Eclipse_of_Thales" id="mwEQ" rel="mw:WikiLink" title="Eclipse of Thales">solar eclipse</a> occurs, as predicted by the Greek philosopher and scientist <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Thales" id="mwEg" rel="mw:WikiLink" title="Thales">Thales</a>, while <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Alyattes_of_Lydia" id="mwEw" rel="mw:WikiLink" title="Alyattes of Lydia">Alyattes</a> is battling <a href="https://en.wikipedia.org/wiki/Cyaxares" id="mwFA" rel="mw:WikiLink" title="Cyaxares">Cyaxares</a> in the <a href="https://en.wikipedia.org/wiki/Battle_of_the_Eclipse" id="mwFQ" rel="mw:WikiLink" title="Battle of the Eclipse">Battle of the Eclipse</a>, leading to a truce. This is one of the cardinal dates from which other dates can be calculated. It is also the earliest event of which the precise date is known.<sup about="#mwt12" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-1"}}' id="cite_ref-1" rel="dc:references" typeof="mw:Extension/ref"><a href="./May_28#cite_note-1" id="mwFg" style="counter-reset: mw-Ref 1;"><span class="mw-reflink-text" id="mwFw">[1]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-1">Asimov, Isaac (1965) <i id="mwBf4">The Greeks</i>, Boston: Houghton Mifflin, p. 91</span>