Just wondering when is the last bullet train from Hong Kong to Guangzhou?

It is not sure yet if the high speed ride can be available at the time you are traveling, some news mentioned that they would be put into service around end of Sep or Oct. The detailed schedule is not clear yet. currently, the Z type for this trip end at 8pm, the time is not enough to catch it if you cannot reach Hung Hom station around 7pm.