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shouldn't the earlier event have past perfect and the event that occurs afterwards have past tense??

This is one of the most confusing traps in tense section - it is suggested that be consciously aware of this trap. The explanation already clarifies why the tenses are so. Following is another example (from Manhattan SC guide) - compare this with option A - the concept would then probably be clearer:

The band U2 WAS just one of many new groups on the rock music scene in the early 1980's, but less than ten years later, U2 HAD fully ECLIPSED its early rivals in the pantheon of popular music.
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While the use of tense in the original, supposedly correct, version of this sentence might be correct in another context, the meaning conveyed by that version is nonsensical.

Here's the OA version:

Shortly after sunset there were juddering green stabs of lightning to the south, but by a quarter to one in the morning there had been nothing in the warm, wet July air over Cape Canaveral but a thin patchwork of moonlit cloud.

The first part of the sentence works, this part, "Shortly after sunset there were juddering green stabs of lightning to the south."

Now, notice what that part conveys. It conveys that there HAD BEEN stabs of lightning.

OK, now, let's consider what the second portion conveys. It conveys that, by a point in time later that night, there HAD BEEN nothing in the sky but a thin patchwork of moonlit cloud.

The meaning of the second portion conflicts with that of the first.

While many people are under the impression that "by the time x" in the past must be followed by the past perfect, it can also be followed by the simple past of "to be," which in this case is "was."

In order for this sentence to make sense, it has to use the simple past "was" rather than the past perfect "had been."

Here's the correct version:

Shortly after sunset there were juddering green stabs of lightning to the south, but by a quarter to one in the morning there was nothing in the warm, wet July air over Cape Canaveral but a thin patchwork of moonlit cloud.
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The question or/and solution has been revised and edited. Thank you sayantanc2k !!!
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Shortly after sunset there were juddering green stabs of lightning to the south, but by a quarter to one in the morning there had been nothing in the warm, wet July air over Cape Canaveral but a thin patchwork of moonlit cloud.

Test: Verb tense, SV agreement
A. were juddering green stabs of lightning to the south, but by a quarter to one in the morning there had been nothing in the warm, wet July air over Cape Canaveral but
=> Correct. Verb tense makes sense
B. has been juddering green stabs of lightning to the south, but by a quarter to one in the morning there is nothing in the warm, wet July air over Cape Canaveral but
=> SV disagreement
C. had been juddering green stabs of lightning to the south, but by a quarter to one in the morning there is nothing in the warm, wet July air over Cape Canaveral but
=> had been juddering... -> order of action doesn't make sense
D. is juddering green stabs of lightning to the south, but by a quarter to one in the morning there was nothing in the warm, wet July air over Cape Canaveral but only
=> SV disagreement
E. have been juddering green stabs of lightning to the south, but by a quarter to one in the morning there is nothing in the warm, wet July air over Cape Canaveral except[/quote]
=> have been is used for action that is still going on in the present, whereas this action has ended.
"Except" is wrong
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i dont get it, the sunset was earlier than quarter to one in the morning right? i mean, there is a time reference. In (A) it seems that sunset came after quarter to one in the morning and that doesnt make sence
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Go to google. Search for the article on Economist - A sudden light. It is the first sentence from that.

This is the article. It's the first line. Now are you saying the exact line from Economist is wrong?
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