the.com/predawn
the hour when the world holds its breath and the ambitious steal a march on everyone
Coldest hourTemperatures often bottom out just before sunrise
Bird timingDawn chorus starts before any light appears
Light scienceAstronomical twilight begins while skies stay fully dark
Human chemistryCortisol surges to wake you before alarms
Sailor sayingDarkest before dawn is poetry, not meteorology