entre chien et loup

Etymology
, because at that time in the day, one can't see the difference. Traditional sentiment, dating to antiquity (found in 2nd century texts), in French from the 18th century.

Adverb

 * 1)  between a dog and a wolf
 * 2)  at dusk, at twilight; gloaming
 * 3)  golden hour used in same technical sense for “good photographic light at twilight”
 * 1)  golden hour used in same technical sense for “good photographic light at twilight”

Usage notes
If used in poetic sense,, which describes a different time of day, when it is darker, but is similarly idiomatic, may provide a more evocative translation.

Synonyms

 * à la
 * à la
 * à la
 * à la