ZI writes: Everything comes in threes in The Legend of Zelda universe. There are the three Golden Goddesses, three mirror shards, three sacred flames and three Spiritual Stones to name a few. Of course, there are also the three parts of the Triforce and their corresponding virtues of power, wisdom and courage.
Hyrule Historia reveals that the timeline also comes in three; with the chronology splitting into three continuums following Ocarina of Time. These splits in the timeline all originate from Link pulling the Master Sword, Ganondorf entering the Sacred Realm and the fallout from that. Could it be that the Triforce and an old Sheikah legend can rationalize the three-way timeline split?