15:06
MAYBE
Checking your clock…
Monterrey learned its work clock from trade, government, and whoever paid for the first telegraph. Today that clock is America/Monterrey, UTC−6 in January. Industrial mornings start earlier than CDMX. A 08:00 ping is fine; a 21:00 ping is not. The polite window around San Pedro is 08:00–18:00 local. Treat overtime glow as scenery, not consent. Monterrey does not shift for daylight saving; the clock stays UTC−6 all year. Daylight is honest here; if it looks like evening, it probably is.
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Monterrey is 15:06. Verdict: MAYBE. Check before you ping → https://asleep.today/monterrey