TFBT: Pindar Paean 9

Here, Pindar is lamenting an eclipse; 

 “Sun’s brilliant beam, what are you thinking?—oh! Mother of all our world’s eyes (Nyx), preeminent star high above, stolen away during daytime?”  

Actually, I think it is just a tease to get the audience’s attention, sort of like the start of the evening news when they tell you they will be talking about something really important after the commerical break.  He continues; 

“Oh hallowed driver of swift horses (Helios), to steer this portentous sign shown everywhere, to happy, pain-free prosperity for Thebes.”

He is talking about when; 

"When spangled-robed night (Nyx) shall veil his brightness."  (Aeschylus, Prometheus Bound 23)

Pindar is a pretty upbeat positive kind of person, plus he isn’t going to disappoint his Theban patron with a bad prophecy.  Rather I suspect he will follow other poets in a positive impression of the coming of the Night; 

"Sable-vestured Nyx (Night) came floating up o'er the wide firmament, and brought her boon of sleep to sorrowing mortals."  (Quintus Smyrnaeus, Fall of Troy 3. 656)  “bringing men release from toil." (10. 435) “dissolving anxious care, the friend of mirth…Be present, Goddess, to thy suppliant's prayer, desired by all, whom all alike revere, blessed, benevolent, with friendly aid dispel the fears of twilight's dreadful shade."  (Orphic Hymn 3 to Nyx) “and laid to rest the cares of men and the prowlings of wild beasts, and wrapped the heavens in her dusky shroud, coming to all with kindly influence." (Statius, Thebaid 3. 406)  
"O Nox (Night) who castest thy mantle over the toiling earth and heaven, and sendest the fiery stars on their divers roaming courses, gracious refresher of the mind, till the next sun shed blithe upspringing upon faint mortality, thou, kindly Nox . . . Ever shall this house throughout the circling periods of the year hold thee high in honour and in worship; black bulls of chosen beauty shall pay thee sacrifice, O goddess” (Statius, Thebaid 1. 497 ff)

All the benefits of “thrice prayed for, most fair, best beloved Night” listed above seem to correlate with the hinted “pain-free prosperity for Thebes.”