Re: Lat/Lon to Local Time

Phil Wheeler wrote...
Anna wrote:

I am writing a program that must calculate local time from
latitude/longitude. I realize this is not a trivial undertaking, given
the social and political issues of time zones. However, it seems to me
that there are programs I've seen that surely must know the algorithm.
Table based lookup is highly undesirable but will do if there are no
other solutions available. Does anyone know how this is done?

Given he said "given the social and political issues of time zone" I
suspect astronomy is not his goal.

You really ought to read the original message properly before you reply -
then you wouldn't owe ANNA an apology! ;-)

David


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Relevant Pages

  • Re: Lat/Lon to Local Time
    ... David Lee wrote: ... latitude/longitude. ... I realize this is not a trivial undertaking, ... the social and political issues of time zones. ...
    (sci.geo.satellite-nav)
  • Re: Lat/Lon to Local Time
    ... latitude/longitude. ... I realize this is not a trivial undertaking, ... the social and political issues of time zones. ... Longitude to local time ...
    (sci.geo.satellite-nav)
  • Re: Lat/Lon to Local Time
    ... Anna wrote: ... latitude/longitude. ... I realize this is not a trivial undertaking, ... Given the gerrymandered time zones, like a lat-long table look up is required. ...
    (sci.geo.satellite-nav)
  • Re: Lat/Lon to Local Time
    ... Anna wrote: ... latitude/longitude. ... I realize this is not a trivial undertaking, ... the social and political issues of time zones. ...
    (sci.geo.satellite-nav)
  • Re: Lat/Lon to Local Time
    ... Sam Wormley wrote: ... latitude/longitude. ... I realize this is not a trivial undertaking, ... the social and political issues of time zones. ...
    (sci.geo.satellite-nav)
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