On 28 Sep 2017, at 2:51am, Keith Medcalf <[email protected]> wrote:
>> I would have expected 0:00, not 12:00. Does this tie into julianday >> being a 12 hour offset? > > Six centuries or so ago it was "kind of difficult" to measure when the sun > was "directly underfoot" at the prime meridian (0 deg, or Greenwich England, > more or less) when your observation point was located on the prime meridian. > It was pretty easy however to be able to tell when "noon" is (when the sun is > at its maximum altitude) by an observer at the prime meridian. So the > juliandate is measures a day from noon to noon. Yet humans still don’t like talking about the number zero. So it’s still called "twelve o’clock" by everyone except programmers. As is midnight. Simon. _______________________________________________ sqlite-users mailing list [email protected] http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
