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Full Discussion: Shell script to get Timezone
Top Forums Programming Shell script to get Timezone Post 302770148 by DGPickett on Thursday 14th of February 2013 02:22:09 PM
Old 02-14-2013
Considering that they bend the lines around nations, this is the approximate or solar time zone, I suppose? Each one is 15 degrees ( 360 / 24 ).

If you can go from lat/long to nation somehow, then you might get the time zone: Time zone - Wikipedia, the free encyclopedia
 

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TZSELECT(8)						      System Manager's Manual						       TZSELECT(8)

NAME
tzselect - select a time zone SYNOPSIS
tzselect DESCRIPTION
The tzselect program asks the user for information about the current location, and outputs the resulting time zone description to standard output. The output is suitable as a value for the TZ environment variable. All interaction with the user is done via standard input and standard error. ENVIRONMENT VARIABLES
AWK Name of a Posix-compliant awk program (default: awk). TZDIR Name of the directory containing time zone data files (default: /usr/local/etc/zoneinfo). FILES
TZDIR/iso3166.tab Table of ISO 3166 2-letter country codes and country names. TZDIR/zone.tab Table of country codes, latitude and longitude, TZ values, and descriptive comments. TZDIR/TZ Time zone data file for time zone TZ. EXIT STATUS
The exit status is zero if a time zone was successfully obtained from the user, nonzero otherwise. SEE ALSO
newctime(3), tzfile(5), zdump(8), zic(8) TZSELECT(8)
All times are GMT -4. The time now is 12:41 PM.
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