Last update was done 9 months ago (to tzdata2008c database). Going to update to tzdata2009c.tar.gz

Source: ftp://elsie.nci.nih.gov/pub/

Instructions:

The olson.txt to be imported is the concatenation, in one unique file of this olson files (in this exact order):

africa, antarctica, asia, australasia, europe, northamerica and southamerica

1) Put the olson.txt file into dataroot/temp/olson.txt
2) Go to Admin -> Location -> Update timezones and confirm
3) Data will be loaded, replacing existing one
4) Generate CSV file from phpMyAdmin (commas as field separators, non-quoted values, unix line feeds and first line as field names)
5) Put it into /lib/timezone.txt
6) Commit

Note: Current timezone.txt format is compatible only with Moodle 1.8 and upwards.

Ciao