15:27
MAYBE
Checking your clock…
In Salt Lake City the local lexicon for a late ping is not 'async' — it is a flare. Mountain Time tech that still keeps church-quiet Sundays. Saturday pings can wait. The polite window around Downtown SLC is 08:00–17:00 local. Midwinter sunsets still arrive before dinner, which makes late Slack feel later than the clock. Ping their late morning unless you already share an on-call rota. Salt Lake City still shifts with daylight saving (UTC−7 in January, UTC−6 in July).
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Salt Lake City is 15:27. Verdict: MAYBE. Check before you ping → https://asleep.today/salt-lake-city