<p>Google Calendarのical/ics形式でORGANIZERを設定するときは、mailtoパラメータが欠損しているとエラーで読み込めないようです。注意。</p>
<h2 id="%E3%83%80%E3%83%A1%E3%81%AA%E4%BE%8B">
<a class="header-anchor-link" href="#%E3%83%80%E3%83%A1%E3%81%AA%E4%BE%8B" aria-hidden="true"></a> ダメな例</h2>
<div class="code-block-container"><pre class="language-ics"><code class="language-ics">BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:adamgibbons/ics
METHOD:PUBLISH
X-WR-CALNAME:Example Calendar
X-PUBLISHED-TTL:PT1H
BEGIN:VEVENT
UID:N-51iY6y9LI7GWppwXDm6
SUMMARY:Test Event
DTSTAMP:20221223T154900Z
DTSTART:20230106T020000Z
DESCRIPTION:Example Event
LOCATION:Japan
ORGANIZER;CN=Hibikine Kage
CREATED:20221223T070600Z
LAST-MODIFIED:20221223T070600Z
DURATION:PT1H
END:VEVENT
END:VCALENDAR
</code></pre></div><h2 id="%E8%89%AF%E3%81%84%E4%BE%8B">
<a class="header-anchor-link" href="#%E8%89%AF%E3%81%84%E4%BE%8B" aria-hidden="true"></a> 良い例</h2>
<div class="code-block-container"><pre class="language-ics"><code class="language-ics">BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:adamgibbons/ics
METHOD:PUBLISH
X-WR-CALNAME:Example Calendar
X-PUBLISHED-TTL:PT1H
BEGIN:VEVENT
UID:N-51iY6y9LI7GWppwXDm5
SUMMARY:Test Event
DTSTAMP:20221223T154900Z
DTSTART:20230106T020000Z
DESCRIPTION:Example Event
LOCATION:Japan
ORGANIZER;CN=Hibikine Kage:mailto:example@example.com
CREATED:20221223T070600Z
LAST-MODIFIED:20221223T070600Z
DURATION:PT1H
END:VEVENT
END:VCALENDAR
</code></pre></div><h2 id="%E5%8F%82%E8%80%83%E8%B3%87%E6%96%99">
<a class="header-anchor-link" href="#%E5%8F%82%E8%80%83%E8%B3%87%E6%96%99" aria-hidden="true"></a> 参考資料</h2>
<p><a href="https://www.rfc-editor.org/rfc/rfc5545#section-3.8.4.3" target="_blank" rel="nofollow noopener noreferrer">RFC5545 Internet Calendaring and Scheduling Core Object Specification (iCalendar) - 3.8.4.3. Organizer</a></p>


Google Calendarのical/ics形式はORGANIZERに注意

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