You can add a <panel> with <html> that displays the $date.earliest$ and $date.latest$ values:
<row>
<panel>
<html>
<h1>Date Range : $date.earliest$ - $date.latest$ </h1>
</html>
</panel>
</row>
You may want to format the values to reflect the actual dateTime values. You can evaluate fields with formatted dateTime values:
<input type="time" token="date" searchWhenChanged="true">
<label>date</label>
<default>
<earliest>-40m@m</earliest>
<latest>now</latest>
</default>
<change>
<eval token="timelabel_earliest">if(isnum($date.earliest$), strftime($date.earliest$,"%m/%d/%Y %H:%M"), strftime(relative_time(now(), $date.earliest$),"%m/%d/%Y %H:%M") )</eval>
<eval token="timelabel_latest">if(isnum($date.latest$), strftime($date.latest$,"%m/%d/%Y %H:%M"), strftime(relative_time(now(), $date.latest$), "%m/%d/%Y %H:%M") )</eval>
</change>
</input>
And then use the fields with the formatted values:
<row>
<panel>
<html>
<h1>$AppEnv$ : $timelabel_earliest$ - $timelabel_latest$ </h1>
</html>
</panel>
</row>
Below is a complete example of a dashboard demonstrating how to display both the time picker value and formatted:
<form>
<label>Display Time Picker</label>
<fieldset submitButton="false">
<input type="time" token="field1">
<label></label>
<default>
<earliest>-24h@h</earliest>
<latest>now</latest>
</default>
<change>
<eval token="timelabel_earliest">if(isnum($field1.earliest$), strftime($field1.earliest$,"%m/%d/%Y %H:%M"), strftime(relative_time(now(), $field1.earliest$),"%m/%d/%Y %H:%M") )</eval>
<eval token="timelabel_latest">if(isnum($field1.latest$), strftime($field1.latest$,"%m/%d/%Y %H:%M"), strftime(relative_time(now(), $field1.latest$), "%m/%d/%Y %H:%M") )</eval>
</change>
</input>
</fieldset>
<row>
<panel>
<html>
<h1>Date Range: $field1.earliest$ - $field1.latest$ </h1>
<h1>Date Range formatted: $timelabel_earliest$ - $timelabel_latest$ </h1>
</html>
</panel>
</row>
</form>
Which renders like this:
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