Twilight (noun)

1. The soft, diffused light from the sky during the early morning or late evening, caused by the sun being just below the horizon.
2. The period of time in the evening when the sun is below the horizon and the sky is partially illuminated.

Origin:

Old english twi-lic "two-fold", from twi- "two" + -lic (adjective suffix). the current sense dates from the late 16th century.

Examples:

1. She watched the sunset from the porch during the twilight hours.
2. The sky was a beautiful shade of pink during twilight.
3. The city lights came on as the sky turned to twilight.
4. The park was quiet during the twilight hours.
5. The stars came out as the sky turned to twilight.