Mercury takes 88 Earth days to go around the Sun, so its year is 88 Earth days. It spins slowly, taking 58.6 Earth days. A solar day on Mercury takes 176 Earth days because of this slow spin relative to the time taken to orbit. So Venus has a sidereal day longer than its year and Mercury has a solar day longer than its year.
Wrap each potato in its own sheet of aluminum foil. Sweet potatoes can leak some of their sugar during baking despite being foil-wrapped, so transfer the wrapped potatoes to a baking sheet before they go into the oven. Baking. The time it takes to bake a sweet potato depends on the size and shape of the potatoes. Small ones should be done in about 45 minutes while medium ones take at least an hour and large ones as much as an hour and a half.
Carefully spread the sweet potatoes out in a single layer on the baking sheet. (Watch out, the pan is hot!) 5 Bake: Bake for a total of 15 to 25 minutes. After the first 10 minutes, remove the baking sheet from the oven and use tongs to turn over all of the sweet potato pieces. Return to the oven and bake for another 5-15 minutes, or until they are well browned. Cooking time depends on the temperature of the oven (500F will need less cooking time than 450F) and the size and thinness of the sweet potato wedges.