Meaning: The time from sunrise to sunset has come to an end, and the stars are shining in the dark sky.
Choice of Words: The noun "day" refers to the time from sunrise to sunset. The verb "ends" means to come to an end or a conclusion. "Stars" are bright objects in the sky at night. "Twinkle" means to shine with a flickering light. "Velvet" is a type of soft, luxurious fabric. "Sky" is the area above the earth where clouds and stars are.