All 4 Uses

twilight
in
Flags of Our Fathers
(Edited)

The town was caught in the lingering twilight of a prior time, a way of life less typical of the Depression than of the Belle Epoque.
Chpt 2. *

twilight = time of decline following prior growth
...and watching the first fireflies of twilight, and greeting their neighbors who strolled by.
Chpt 2.

twilight = the time of day between daylight and darkness
The day, on the other hand, could seem like a perpetual twilight.
Chpt 2.
As twilight settled in, the rawboned Texan moved among the boys of what was now his squad, giving orders for everyone to dig in and align themselves with a good field of fire.
Chpt 13. *

Definitions:

(1) (twilight as in: pink clouds in a twilight sky)
the time of day between daylight and darkness (just after sunset or just before sunrise); or the light from the sky at that time
(2) (twilight as in: the twilight of her career)
a condition of decline following successes
(3) (meaning too rare to warrant focus)
Much more rarely, twilight can refer to