I think it's interesting that both the Mrs. Joe Arnold and Betty Klenck radio intercepts mention the word "suffer(ing)." Also, "Howland" is mentioned shortly after the "suffer" word in both reports:
Arnold: "We're suffering, but holding on. Couldn't see Howland Island."
Klenck: "different suffer : Amelia : take it away : Howland"
If in fact both ladies heard the same broadcast, it seems that would make Betty's intercept also July 8th, if the LA Times article July 9th was accurate in reporting that Arnold's intercept occurred the night of July 8. Also possible Earhart used "suffer" or "suffering" multiple times, but that word strikes me as something that would be said off the cuff, rather than included in a planned, oft-repeated message. But I suppose the suffering was ongoing, and it's possible the word was used in multiple transmissions.
Betty reports the "suffer" reference coming in some time before 4:30pm Florida (Eastern) time; however, the LA Times refers to Arnold's Oklahoma (Central Time) intercept "tonight." Perhaps by the time the Arnolds reported the intercept, it was already night time, and in fact the intercept itself had been earlier.