When its 75 degrees F by 7:30 a.m., that’s a warm day, no matter how you slice it. At the Hilo Farmer’s Market, it really is “from dawn ’til it’s gone” and the vendors carry mostly the same varieties of produce — apple bananas, papayas, Japanese cucumbers, tomatoes. A few tables have prepared food, including vegetarian summer rolls — filled with lettuce, carrot, red cabbage, rice noodles, basil, a touch of mint — delicious at 7:30 in the morning with sweet chili sauce.