It's possible they both mean ~ UT+09, since Britain (and, by extension, Greenwich) would have been on DST in the summer of 1946.  So, 8 hours ahead of the time observed in Greenwich, but 9 hours ahead of the [mean solar] time at the Greenwich meridian.

Hard to know for sure without further context.

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Tim Parenti


On Thu, 3 Jan 2019 at 10:07, P Chan <legco@outlook.com> wrote:
"The new (Summer) Standard Time will be 8 hours slower than Greenwich Time and 1 hour faster than Guangzhou Time"
what?
Yes. But I also found another newspaper which stated "9 hours ahead of GMT".
https://i.imgur.com/F5aV1eD.jpg