I have a 1941 National Geographic map of the Indian Ocean which shown local
time zones in each country, not hours or half hour differences form
Greenwish, but often 5 minutes past the hour, or 20 to the hour.
With no international railroads in operation then, unlike the US,
standardisation had to await international airflights, post-WW2. I'm
guessing by 1950 things were standardised.
BW
>From: bjbutler@...
>Reply-To: BoundaryPoint@yahoogroups.com
>To: BoundaryPoint@yahoogroups.com
>Subject: [BoundaryPoint] Re: Really Abitrary Points
>Date: Thu, 21 Jun 2001 15:01:51 -0000
>
>Interesting about Utrecht time. In the US there was no
>standardization of time zones until railroad travel made it
>necessary. Generally each city had its own time, referred to
>as "Chicago time", "New York time", etc. I don't know if these times
>were integral numbers of hours apart. They may have been very
>arbitrary.
>
>BJB
>
>--- In BoundaryPoint@y..., "Harry ten Veen" <h.ten.veen@t...> wrote:
> > That is indeed an interesting thought Brian!
> >
> > There are already some people active! see:
> > http://www.confluence.org/index.php
> >
> > Btw. In the city of Utrecht (the Netherlands) in the
>Volkssterrenwacht
> > Sonnenborgh the so-called
> > Utrecht-meridiaan is marked. It is on 5 deg. 7 min. east.
> > At this point the Utrecht-standard-time was calculated and measured
>using a
> > large telescope. In the 1920's they abandoned Utrecht-time.
> >
> > gl
> > Harry ten Veen
> >
> >
> > ----- Original Message -----
> > From: <bjbutler@b...>
> > To: <BoundaryPoint@y...>
> > Sent: donderdag 21 juni 2001 14:24
> > Subject: [BoundaryPoint] Really Abitrary Points
> >
> >
> > > Jack's recent mention of the Greenwich meridian reminded me of an
> > > idea I had a while back for another class of points -
>intersections
> > > of important lines of latitude and longitude. For example, where
>the
> > > Greenwich meridian crosses the equator, the arctic circle, or the
> > > antarctic circle. Ditto for the international date line. Then,
>of
> > > course, there are all of the intermediate meridians and
>latitudes, 30
> > > degrees, 45 degrees, 60 degrees, etc. This could be combined with
> > > some trigonometry and a good clock to produce some interesting
> > > coincidences. Just another way to pin yourself in space and
>time, I
> > > guess.
> > >
> > > BJB
>
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