05:27
NOT NOW
Checking your clock…
Night-desk rule for Wuhan: if you would not ring a bell in the Optics Valley offices at that hour, do not Slack. Central China, Beijing's clock. Evenings close earlier than Shenzhen. Wuhan does not shift for daylight saving; the clock stays UTC+8 all year. The polite window around the Optics Valley offices is 09:00–18:00 local. Put the timezone in the invite title so nobody has to do the math in public.
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Wuhan is 05:27. Verdict: NOT NOW. Check before you ping → https://asleep.today/wuhan