the stars never clock out — the sun just outshines their whole shift.
means stars are visible in daylight only under specific conditions, because the sun's scattered light in the atmosphere usually drowns out their much fainter glow.
from the term isn't a formal astronomy phrase so much as a recurring realization: ancient skywatchers assumed stars vanished at dawn, until telescopes, deep wells, and eclipses revealed they'd been there the whole time, just outmatched in brightness.
venus daytime sighting — visible near sunrise or sunset with naked eye
sirius through telescope — amateur astronomers track it in broad daylight
total solar eclipse 2017 — stars and planets appeared across the us for minutes
ancient well observation — greek astronomers claimed deep wells revealed stars at noon