Have you ever wondered why the order of the weekdays is ‘Sunday, Monday, Tuesday, Wedneday, Thursday, Friday and Saturday? The clue lies in Hora. It is the basis for determining the order of the weekdays.
List the planets on the basis of their average speeds or in the order of their dwipa (ellipsoidal orbits around the earth in the Bhu-Mandala). If we consider a heliocentric system then the speed of the Moon would be the highest followed by the order of the planets in their distance from the Sun i.e. Moon, Mercury, Venus, Earth, Mars, Jupiter and Saturn.
The word hora means a unit of time equivalent to an hour and in all likelihood has been the root of the same word. It is derived from two words “aho” & “ratra” meaning “day” & “night” respectively. Thus hora also means the most primary two-fold division of time on the basis of the day & night. This takes into account not only the time frames but also the quality of time like the day is dominated or ruled by the Sun and the night by the Moon.