In ample natural illumination, during the daytime.
(figuratively) In a blatant and publicly visible manner.
Source: en.wiktionary.orgWe live in a world where we have to hide to make love, while violence is practiced in broad daylight. John Lennon
There are times when we must sink to the bottom of our misery to understand truth, just as we must descend to the bottom of a well to see the stars in broad daylight. Václav Havel
Peter Mandelson is the only man I know who can skulk in broad daylight. Simon Hoggart
He lit a lamp in broad daylight and said, as he went about, "I am looking for a human." Diogenes of Sinope
I was drowning in broad daylight and no one could tell. Sarah Dessen
I determined to rule in broad daylight or not at all. Alexander Mackenzie