On Sep 20, 2013, at 8:02 AM, carlisle thacker wrote:
I have data that provide longitude, latitude, and local date and
time but
no information about the corresponding time zone. How to identify
the time
zone so they can be converted to a common date/time?
Perhaps as an approximation you could divide the longitude by 360/24,
truncate and subtract to get an estimated GMT. It really depends on
your purposes, the encoding of "local time", need for accuracy, and
perhaps further details regarding the data collection methods, none of
which you have provided.
--
David Winsemius, MD
Alameda, CA, USA
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