On 1/1/16 7:15 AM, Alban Hertroys wrote:
Since you're dealing with GPS data and presumably have lat/long, it shouldn't be hard
to do this dynamically either, either by just blindly dividing longitude by 15 or
using actual timezone shape polygons and @> or <@.
That would be a bad idea for global data, since not all time zones are full
hours apart, or have the same (if any) DST change-over dates. For example,
India is currently at UTC+05:30, probably because they wrapped the entire
country in the same TZ after their independence.
The original desire was to ignore DST, hence my suggestion. Normally
you'd want to figure out the correct TZ for the lat/long.
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Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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