Informally, the evening is the period in which the daylight is decreasing, between the late afternoon and night; it extends from the latter portion of the daylight (before sunset) until dark (after sunset). Typically between 6 and 9 pm. Euphemistically the evening is also the latter part of a person's life.
Evening is often defined as the period from 6:00pm to midnight, regardless of the time that the sun sets.**
The Bible uses a term for the period of time between two distinct evenings: "beyn ha arbayim" translated as "between the two evenings". Though both of the above camps define one of the evenings as sunset, the other is controversial. From the passages in Matthew 27:46, 57 and Mark 15:34, 42, the New Testament clearly supports the first evening to be the ninth 'hour' of the day (an hour in the Bible defined as 1/12th of the daylight portion of the day), and the second evening, that ends the day, at sunset.
The "evening newspapers" are newspapers that are printed late in order to include last-hour news and are usually available only after noon.
The "Evening Star" is a name for the planet Venus, which can appear brilliantly on the western sky after sunset, being also the first 'star' that can be seen.