Is possible include the Date & Time on the Logs of Workflows. By example
on this XML tags of one process template

<log-activity activity-id="log_approval" audit="false">
<display-name xml:lang="en">Log for approval activity</display-name>
<author>initiator</author> <message>'Log
approval'</message>
</log-activity>

We need put the Date & Time on the content for message TAG (<message>)
of the log-activity main TAG.