On 1 October 2010 22:32, David James <da...@djames.org.uk> wrote: > On 01/10/2010 17:14, andrzej zaborowski wrote: >> On 1 October 2010 18:12, andrzej zaborowski<balr...@gmail.com> wrote: >>> >>> Checking if a point is inside a polygons is trivial, but is it what >>> they really want? Wouldn't just the longitude tell you the time >>> better than the timezone? >>> >>> E.g. offset_from_gmt = ((lon - 180) / 15) hours >> >> oops, rather (lon / 15) hours > > Timezone boundaries do not exactly follow lines of longitude (Google finds a > nice map here: http://www.travel.com.hk/region/timezone.htm).
Yes, that's my point. The longitude is likely a better indicator of when people are active than the timezone (judging mostly from what time people tend start the day at the two ends of the European GMT+1/+2 strip.) Cheers _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
