Another China time zone question

[Tony Finch]

On Sat, 16 Oct 2010, Jonathan Hassid wrote:
>
> There is a longish discussion about whether Beijing time means local
> solar time or based on a GMT offset, and Guo argues that between 27 Sep
> 1949 and 1954 (date unspecified), "Beijing time" meant local Beijing
> solar time (with an offset varying by time of year of course, but
> generally between 46 and 56 minutes earlier than 120 degree latitude
> time).

That's surprising. It's easier to generate time signals based on mean
solar time, not aparrent solar time.

Tony.
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HUMBER THAMES DOVER WIGHT PORTLAND: NORTH BACKING WEST OR NORTHWEST, 5 TO 7,
DECREASING 4 OR 5, OCCASIONALLY 6 LATER IN HUMBER AND THAMES. MODERATE OR
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