The most common and most likely answer to this crossword clue is the 6 letter word SUNSET
S
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N
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T
More clues leading to the result SUNSET
- Lighter and firm dip at the end of the day?
- Evening event succeeded — tunes involved
- Decline seconds, not ready?
- Students upset group, at the end of the day
- Evening with film stars ahead
- Murdoch organ fixed – and so ends our enlightenment?
- Poles central to fat star’s decline
- End of day fixed: around noon in America
- Fat will restrict team-mates at the end of the day
- Day’s end is not preordained
Buddy explains!

The straight part
We know that "so ends our enlightenment (each day)" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case so ends our enlightenment (each day) = sunset.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SUNSET mean?
SUNSET noun- The time of day when the sun disappears below the western horizon.
- The changes in color of the sky at sunset.
- The final period of the life of a person or thing.
- Having a set termination date.
- The region where the sun sets; the west.
- To phase out.