HL and GL
The word horā is derived from aho-rātra by removing the first (a) and last (tra) syllables. The word aho means day and rātra means night thereby referring to the division of the day into the two parts of day and night. The day is lorded by the Sun and the night is lorded by the Moon, being the most brilliant luminaries in the sky at these times. Consider the seven
planets having physical bodies (i.e. from the Sun to Saturn) that lord over the weekdays. If the luminaries (Sun & Moon) are represented by the word horā in aho-rātra, then