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<div>The script below can be used to update this page; </div>
<div><a href="https://www.roaringpenguin.com/wiki/index.php/Earth_Seasons">https://www.roaringpenguin.com/wiki/index.php/Earth_Seasons</a></div>
<div>It will generate what appear to be correct dates until at least the Winter Solstice, 2100-12-21T19:52.</div>
<div> </div>
<div>#!/bin/bash</div>
<div># The list of sun positions below is from the Astronomical Applications </div>
<div># Department of the U.S. Naval Observatory </div>
<div># </div>
<div> </div>
<div>Output=SolarDataReminders</div>
<div>File=$(mktemp)</div>
<div>for Year in $(seq 2018 2100)</div>
<div> do</div>
<div> links "<a href="http://aa.usno.navy.mil/seasons?year=${Year}&tz=0&dst=0">http://aa.usno.navy.mil/seasons?year=${Year}&tz=0&dst=0</a>" -dump \</div>
<div> | grep -E 'helion|quinox|olstice' \</div>
<div> | sed -e 's/ */ /g' -e 's/^ *\(.*\) *$/\1/' \</div>
<div> >> ${File}</div>
<div>done</div>
<div> </div>
<div>while read Event Year Month Day Time</div>
<div> do Comdelimit=$(echo ${Time} | tr ":" ",") </div>
<div> echo "REM [trigger(date("${Year}","${Month}","${Day}"), time("${Comdelimit}"), 1)] MSG "${Event} ; </div>
<div> echo</div>
<div> done < ${File} | grep -vE '^$' > ${Output}</div>
<div>rm ${File}</div>
<div> </div>
<div>After running, you should have accurate Remind statements in the file SolarDataReminders in your present working directory.</div>
<div> </div>
<div>Any questions, please ask!</div>
<div> </div>
<div>Steve Jones</div>
<div> </div>
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