Just set them to the recommended cold pressure (in the morning, or after the vehicle has been stopped for several hours, preferably out of the sun) and no need to worry beyond that, other than keeping the usual eye on them (and obviously my personal recommendation is to use a TPMS but that's an individual decision.) If you have no choice but to set the initial pressure when one side is in the sun and the other is in the shade I'd reduce the sunlight side by 2 psi, and then check those tires after you have been on the road a while and adjust them to match the shaded-side tires, if necessary.
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