05:53
NOT NOW
Checking your clock…
Night-desk rule for Sapporo: if you would not ring a bell in Odori-adjacent offices at that hour, do not Slack. Same JST, winter dark by 16:30. A 18:00 ping already feels like night. Sapporo does not shift for daylight saving; the clock stays UTC+9 all year. The polite window around Odori-adjacent 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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Sapporo is 05:53. Verdict: NOT NOW. Check before you ping → https://asleep.today/sapporo