Sun Warrior lasts twice as long. Allies who pass through your Sunspots are granted Sun Warrior.
Sol Invictus lasts twice as long. Allies who pass through your Sunspot are granted Sol Invictus and Restoration. Dealing sustained [Solar]Solar damage in a Sunspot extends the duration of the Sunspot. Applying Solar buffs to allies has a chance to create a Sunspot at your feet.