Final answer:
In Robert Frost's poem, the speaker responds to the luminary clock with feelings of melancholy and isolation, consistent with the somber mood throughout the text.
Step-by-step explanation:
The speaker in Robert Frost's Acquainted with the Night responds to the luminary clock with a sense of melancholy and isolation. The text provides various examples of feelings and atmospheres that surround the speaker or protagonist in each scenario, always leaning toward the somber and desolate rather than joy, excitement, or casual indifference. The emotions are linked with the nighttime and darkness, often evoking a sense of solitude or dread.