Dark days in the summer" can refer to a few things. It could be a metaphor for difficult or challenging times, similar to how "dark days" are used to describe periods of hardship. It could also refer to the natural phenomenon of the "darkness" that occurs during a solar eclipse or a period of extended night at higher latitudes, though these are not specific to summer. Additionally, certain cultural or religious observances, like the Jewish fast of Tisha B'Av, occur during the summer and are associated with mourning and remembrance. Link
Challenges are common to man, they will surely come. And most times they come in the form that you would least expect. I quite understand why they call it the dark days because it is not easy to cope during these days, some even give up on life when facing these challenges.
For me, this prompt is an expression of the challenging times. I will say you should not let this time overcome you.
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