In 2019 it was proposed that the rock sanctuary of Yazılıkaya, which is considered one of the holiest places in the Hittite kingdom, had a calendrical function (Zangger & Gautschy 2019). The 64 preserved rock-cut reliefs of deities in Chamber A can be arranged in groups to mark the days, synodic months and solar years. This arrangement was made in order to keep track of synodic months and solar years and/or to display an accurate date during monthly and annually recurring festivals (Demirel 2017). Here we aim to elaborate on three questions not addressed at the outset: Firstly, why do the figures used for counting the days (Reliefs 13–41) differ in character, whereas those for counting months (Reliefs 1–12) and years (Relief 46a–63) are virtually identical with each other? Secondly, what is the meaning (technically or metaphorically) of the main panel (Reliefs 42–46)? Thirdly, how can the symbolism of Chamber B be interpreted?