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    <p>A thought on this: If this becomes standard, APRS applications
      could use this information to "schedule" object availability, if
      it is computer parseable. For example, I may not want to
      constantly transmit an object for a meeting that only takes place
      once per month. Instead, it would be great to schedule this so
      that it is only transmitted for, say, the 24 hours before the
      meeting.  This value of course would be a setting specific to the
      application itself, and would not be part of the APRS packet.</p>
    <p>- Dave/KD8TWG<br>
    </p>
    <div class="moz-cite-prefix">On 1/27/17 12:17 AM, Kenneth Finnegan
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAFS5k-hnag5Ooork=u044AqurezTtSZgFtgU9bMQhvEGKfnf8g@mail.gmail.com"
      type="cite">
      <div dir="ltr">On Thu, Jan 26, 2017 at 7:58 AM, Robert Bruninga <span
          dir="ltr"><<a moz-do-not-send="true"
            href="mailto:bruninga@usna.edu" target="_blank">bruninga@usna.edu</a>></span> wrote:<br>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">VALUE:
          a properly formatted repeater FREQUENCY named object shows all
          of<br>
          this info in a single packet:<br>
          [...snip...]<br>
          * Weekly NET times<br>
          * Monthly club Meeting dates<br>
        </blockquote>
        <div class="gmail_extra"><br>
        </div>
        <div class="gmail_extra">As far as I can tell, the format for
          net and meeting times is only mentioned in passing 3/4 of the
          way down on the freq spec and local info pages without a
          specific recommendation on format. Running some queries on my
          database of APRS traffic, it looks like the use of NET and MTG
          notes is... remarkably low.</div>
        <div class="gmail_extra"><br>
        </div>
        <div class="gmail_extra">To give operators more concrete
          guidance on what to enter, and maybe even be
          computer-parsable, I'd like to propose and solicit feedback on
          an "Event Time Data Extension"</div>
        <div class="gmail_extra"><br>
        </div>
        <div class="gmail_extra"><a moz-do-not-send="true"
href="https://github.com/PhirePhly/aprs_notes/blob/master/EventTimeDataExtension.md">https://github.com/PhirePhly/aprs_notes/blob/master/EventTimeDataExtension.md</a><br>
        </div>
        <div class="gmail_extra"><br>
        </div>
        <div class="gmail_extra">
          <h1 style="box-sizing:border-box;margin:0px 0px
            16px;line-height:1.25;padding-bottom:0.3em;border-bottom:1px
            solid
rgb(238,238,238);color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol"">Event Time Data Extension Specification</h1>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">This document formalizes the
            radio net and in-person meeting time spec which is mentioned
            in the APRS Freq Spec text file (<a moz-do-not-send="true"
              href="http://www.aprs.org/info/freqspec.txt"
style="box-sizing:border-box;background-color:transparent;color:rgb(64,120,192);text-decoration:none">http://www.aprs.org/info/freqspec.txt</a>).
            This data extension is meant to indicate weekly or monthly
            nets/meetings which would be of interest to amateur radio
            operators. It does not include any information on where or
            what frequency the event happens, so that should be clear
            from the context of the rest of the packet. (i.e. Meeting
            events could be included in a "club shack" object beacon,
            and net events could be in repeater object beacons or
            accompanied by a freq spec)</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">These data extensions may be
            used similar to all other APRS data extensions, so may be
            included anywhere in location packet comment fields, in
            status packets, in object comment fields, messages, etc.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">The length of this data
            extension is not limited to 7 bytes and may be dynamic based
            on the specificity of the event time.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">These data extensions are not
            meant to replace ISO 8601 time/date stamps, which should be
            used for specific non-recurring events such as annual
            hamfests.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">There is no way to express
            biweekly events in this extension. Other methods should be
            used to advertise events on that schedule.</p>
          <h2
style="box-sizing:border-box;margin-top:24px;margin-bottom:16px;line-height:1.25;padding-bottom:0.3em;border-bottom:1px
            solid
rgb(238,238,238);color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol"">Extension Format</h2>
          <pre style="box-sizing:border-box;font-family:consolas,"liberation mono",menlo,courier,monospace;font-size:13.6px;margin-top:0px;margin-bottom:16px;font-stretch:normal;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-radius:3px;color:rgb(51,51,51)"><code style="box-sizing:border-box;font-family:consolas,"liberation mono",menlo,courier,monospace;font-size:13.6px;padding:0px;margin:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;background-color:transparent;border-radius:3px;word-break:normal;border:0px;display:inline;overflow:visible;line-height:inherit;word-wrap:normal">[Event Identifier](Week of Month)[Day of Week][Time of Day](Time zone abbreviation)
</code></pre>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">Items in square brackets are
            required; those in parenthesis are optional.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">The event identifier indicates
            what kind of event is being advertised:</p>
          <ul
style="box-sizing:border-box;padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">
            <li style="box-sizing:border-box"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">NET</code> -
              Radio net</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">MTG</code> -
              Club or social in-person meeting</li>
          </ul>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">Week of month is optional to
            indicate that an event only happens on a certain week of a
            month. Value may be one or more of:</p>
          <ul
style="box-sizing:border-box;padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">
            <li style="box-sizing:border-box"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">1st</code></li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">2nd</code></li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">3rd</code></li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">4th</code></li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">5th</code></li>
          </ul>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">Day of week is required and
            indicates the days of the week an event happens. Values may
            be one or more of:</p>
          <ul
style="box-sizing:border-box;padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">
            <li style="box-sizing:border-box"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">Mo</code> (Monday)</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">Tu</code> (Tuesday)</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">We</code> (Wednesday)</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">Th</code> (Thursday)</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">Fr</code> (Friday)</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">Sa</code> (Saturday)</li>
            <li style="box-sizing:border-box;margin-top:0.25em"><code
                style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
                0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">Su</code> (Sunday)</li>
          </ul>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">The week of the month is
            calculated per day, not including partial weeks where the
            day of interest falls in the previous month.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">Time of Day is required and
            indicates the time of the event in 24h local time. It is a
            four digit number less than <code
              style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
              0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">2400</code>.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px">The time zone abbreviation is
            an optional indication of which time zone is used, and
            should only be used when near the edge of two time zones and
            it's unclear which conventional local time to use. This
            field should be very rarely used.</p>
          <h2
style="box-sizing:border-box;margin-top:24px;margin-bottom:16px;line-height:1.25;padding-bottom:0.3em;border-bottom:1px
            solid
rgb(238,238,238);color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol"">Examples</h2>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px"><code
              style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
              0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">NETTu1745</code> -
            A net happens weekly on Tuesday at 5:45PM.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px"><code
              style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
              0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">MTG2ndWe1900</code> -
            A meeting happens on the second Wednesday of the month at
            7PM.</p>
          <p
style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px"><code
              style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
              0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">NETMoTuWeThFr0900</code> -
            The morning talknet happens every weekday at 9AM.</p>
          <p
style="box-sizing:border-box;margin-top:0px;color:rgb(51,51,51);font-family:-apple-system,blinkmacsystemfont,"segoe
            ui",helvetica,arial,sans-serif,"apple color
            emoji","segoe ui emoji","segoe ui
            symbol";font-size:16px;margin-bottom:0px"><code
              style="box-sizing:border-box;font-family:consolas,"liberation
mono",menlo,courier,monospace;font-size:13.6px;padding:0.2em
              0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-radius:3px">MTG1st3rdSu1000</code> -
            Brunch is had on the first and third Sundays of the month at
            10AM</p>
        </div>
        <div class="gmail_extra"><br clear="all">
          <div>
            <div class="gmail_signature">--<br>
              Kenneth Finnegan, W6KWF<br>
              <a moz-do-not-send="true"
                href="http://blog.thelifeofkenneth.com/" target="_blank">http://blog.thelifeofkenneth.com/</a></div>
          </div>
          <div class="gmail_quote"><br>
          </div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
aprssig mailing list
<a class="moz-txt-link-abbreviated" href="mailto:aprssig@tapr.org">aprssig@tapr.org</a>
<a class="moz-txt-link-freetext" href="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a>
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    <pre class="moz-signature" cols="72">-- 


David Andrzejewski
E-mail/iMessage/Jabber: <a class="moz-txt-link-abbreviated" href="mailto:david@davidandrzejewski.com">david@davidandrzejewski.com</a>
PGP Key ID: 5EBA8A72
<a class="moz-txt-link-freetext" href="https://dandrzejewski.keybase.pub/">https://dandrzejewski.keybase.pub/</a>
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