The Aztec calendar, also known as the Aztec Sun Stone, doesn't actually depict a sun god specifically. While the central figure is often interpreted as the sun god Tonatiuh, it's more accurate to say it represents a cosmic deity, representing the cycle of the sun and the universe.

Here's a breakdown:

* Tonatiuh is a significant figure in Aztec mythology, associated with the sun, war, and sacrifice. He's represented with a face adorned with sacrificial knife and a necklace of hearts, highlighting his association with blood and sacrifice.

* The Sun Stone is a complex calendar system and not simply a representation of Tonatiuh. It depicts five eras of the universe, each ending with a cataclysmic event.

* The central figure, while linked to Tonatiuh, embodies the sun's life-giving energy and the cyclical nature of the universe, not just the god himself.

* The Sun Stone is a powerful symbol for the Aztecs, representing their understanding of time, the cosmos, and their place within it.

In short, the Aztec calendar is a complex and multifaceted symbol with the central figure representing the sun's power and the cycle of the universe, not just Tonatiuh as a singular deity.