 in format-rfc3339-timestring omit-timezon-part defaults to omit-time-part, because you most probably don't need the timezone if the time itself is not displayed.
 in format-rfc3339-timestring omit-timezon-part defaults to omit-time-part, because you most probably don't need the timezone if the time itself is not displayed.

deadtrickster/local-time,webcheckout/local-time,orivej/local-time