is the *relative* sunniness between spots on a site always the same throughout the year?

Say I have three planting locations A, B, and C. It’s winter, and I know that without a more sophisticated tool like a Solar Pathfinder, I can’t really know *how much* sun each site will get during the growing season. However, if I record observations now to find out the order of sunniest to least sunny in winter, does it follow that the same order would hold in summer? Or does the differing angle of the sun throughout the year mean that this might not be true depending on how obstructions are positioned? I’ve tried to visualize this to answer the question but it kind of hurts my brain.