twilight

noun
1
the small amount of light or the period of time at the end of the day after the sun has gone down
شفق, گرگ و میش, نور کم شامگاهی
compare dusk
2
the final stage of something when it becomes weaker or less important than it was
زوال, افول
She was in the twilight of her career by then.
He spent his twilight years living with his daughter in Bristol.