*Seh₂ul and *Meh₁not are the reconstructed Proto-Indo-European Sun deity and Moon deity respectively. *Seh₂ul is reconstructed based on the solar deities of the attested Indo-European mythologies, although its gender (male or female) is disputed, since there are deities of both genders. Likewise, *Meh₁not- is reconstructed based on the lunar deities of the daughter languages, but they differ in regard to their gender.
The daily course of *Seh₂ul across the sky on a horse-driven chariot is a common motif among Indo-European myths. While it is probably inherited, the motif certainly appeared after the introduction of the wheel in the Pontic–Caspian steppe about 3500 BC, and is therefore a late addition to Proto-Indo-European culture.