Wiktionary
from can see to can't see
a. (context idiomatic US English) From the time when it is barely light enough to see until there is no light remaining whatsoever: from sunup to sundown, from dawn to dusk alt. (context idiomatic US English) From the time when it is barely light enough to see until there is no light remaining whatsoever: from sunup to sundown, from dawn to dusk
Usage examples of "from can see to can't see".
Those days, when a man works from can see to can't see, he just naturally passes out when he hits the bed.