time.  Input format is
&quot;[+-][[[DD ]HH:]MM:]SS[.ss]&quot;.  Must be set before Geotime to be effective.
Additional features allow calculation of time differences and time drifts,
and extraction of synchronization times from image files. See the
<a href="../geotag.html">geotagging documentation</a> for details)</span></span></td></tr>
<tr>
<td>Geotag</td>
<td class=c>Y</td>
<td class=c>-</td>
<td><span class=s><span class=n>(this write-only tag is used to define the GPS track log data or track log
file n