टेम्पलेट:Tz/coordinates

Info about tz database data storage in Wikipedia can be found at Template:Tz/doc#tz database. From zone.tab:

# 2.  Latitude and longitude of the zone's principal location
#     in ISO 6709 sign-degrees-minutes-seconds format,
#     either +-DDMM+-DDDMM or +-DDMMSS+-DDDMMSS,
#     first latitude (+ is north), then longitude (+ is east).