Is it possible to use the same tool to have Ubuntu guess what timezone it is currently in?
This article mentions the feature I'm looking for (just above the second pic):
http://www.linuxforu.com/2012/05/ubuntu-12-04-precise-pangolin-review/
I decided to download the ubiquity source and dig for it. Greping timezone found the concerned lines, which issue the command:
wget -O - -q http://geoip.ubuntu.com/lookup
and parse the resulting xml.
Rather than load up python or something else, I just wrote a quick bash script that grabs the xml and yanks the timezone out with sed:
#!/bin/bash
# Fetch timezone from Ubuntu's geoip server
TZ=`wget -O - -q http://geoip.ubuntu.com/lookup | sed -n -e 's/.*<TimeZone>(.*)</TimeZone>.*/1/p'`
# Set the current time
cp /usr/share/zoneinfo/$TZ /etc/localtime
