23:01
NOT NOW
Checking your clock…
Night-desk rule for Hamburg: if you would not ring a bell in HafenCity at that hour, do not Slack. Port clocks and media clocks share a city. Most Slack still dies at 18:00. Hamburg still shifts with daylight saving (UTC+1 in January, UTC+2 in July). The polite window around HafenCity is 08:00–17:00 local. Put the timezone in the invite title so nobody has to do the math in public.
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Hamburg is 23:01. Verdict: NOT NOW. Check before you ping → https://asleep.today/hamburg