In terms, hour (LH:3), from the Greek hora, meaning "a word used to indicate any limited time within a year, month, or day", from Horai meaning seasons (Homer, 800BC), from the Egyptian god Horus (3100BC), the limiter of time, aka Harpocrates (Horus the child) to the Greeks, conceptualized as the alpha (α) and the omega (ω), as shown adjacent, a concept rendered in the word "ωρα" (NE:901), meaning "time" or "hour"; the 24th part of a day: 60 minutes.
The word "ωρα", comprised of the α (beginning) and ω (end or limit), gives a straight modern English translation as "time" or "hour", but is also gematria-coded as the number "901", which is numerically equivalent to: "care; season; prime of life". This seems to be a reference to the "noon sun", in the sense of sun being at its "prime of life", in the sense of the sun having different power levels, as shown below, or most powerful in solar light amount:
In 3100BC, the Egyptians, in sum, had a basic etymology of the word "hour", or 12 stages of the life of Horus, or twelve phase of the strength of the daily sun, divided between the "morning sun" (α), conceptualized as Horus born out of a lotus rising out of the waters of the Nile River, pictured adjacent, who becomes the "noon sun" (ωρα = time, hour, or prime of life), eventually becoming the "evening sun" (ω), as illustrated below:
In other words, Horus the younger, Horus the powerful, and Horus in old age, divided into 12 "hours" (or Horuses) in a day.
In 800BC, the Greeks, after traveling to Egypt to study their cosmology and science, adopted the Horus model of time, albeit rescripted into a new Greek cosmo-mythology language, e.g. Horus became Apollo, and the Horai (or Horae) became the goddess of the seasons (Homer, 800BC). Eventually, in the millennia to follow, the word hora came to be "used to indicate any limited time within a year, month, or day". Hence, when we say "what hour is it?", the Greek or Egyptian equivalent, would have been: "what Horus is it?"
The following are quotes:
- “In the same: Apollos, and who is the sun, as Horus is called: from the time when the day and the night in which it is made up of twenty-four ‘hours’ in the name of, and have received them, the world is filled with hours in a year, and four times in which they are called.”
- “The name of Horae, Hours, came from an Horus Apollo, an Egyptian sage, who first divided the day into those portions we call ‘hours’, as Macrobius (Saturnalia I.1.21) informs us.”
- — Thomas Powell (1661), Human Industry: a History of the Manual Arts 
- “The Greeks assigned the divisions of the day in to hours, to Horus, whose name these divisions still bear; while Diogenes Laertius in Thalia ascribes such division to Thales.”
- — William Maude (1900), “Notes to Censorinus’ De Die Natale” (pg. 26)
- “Apollo was surnamed Egyptian (Pausanias II.27.5). Macrobius (Saturnalia 1.21) writes, ‘among the Egyptians, Apollo [and he is the sun] is called Horus — whence the name ‘hours’ (horae) has been derived.”
- — William Shelley (1998), The Origin of the Europeans (pg. 185) 
- “The word ‘Horus" in Irenaeus's discourse on the Marcosians, in which he relates that they ‘say that this is an image of Horus, encircling their thirty-named mother’, is often translated as ‘limit’, after the Greek word Horos or Ορος. The term for the god Horus used by Plutarch (38, 366A) and other Greek writers was in fact Ωρος — Horos. While pronounced the same, the two words are spelled differently in Greek, the term for ‘limit’ or ‘boundary’ starting with the Greek letter omicron (‘Ο’), while the Egyptian god's name begins with an omega (‘Ω’). Nevertheless, the word for ‘hour’ or ‘limited time’ is ωρα — hora — beginning with an omega, which would indicate that all three terms are cognates, especially since Horus himself has been identified with time, having been said to be the originator of 12 hours or ωρες / hares in the Greek, a word claimed by Horapollo to come from Horus’ name. Plutarch (38, 366A) also noted the correspondence between Hora and Horus, remarking: ‘The all-conserving and fostering Hora, that is the seasonable tempering of the surrounding air, is Horus.’ Plutarch's word ‘Hora’ is the same as that above, referring to a time period as well as a season or climate. Furthermore, the past tense of the ancient Greek verb ‘to limit’ — οριζω — is ωρισα, with an omega, the same as in the name Horus.”
- “The ancient Egyptians had personifications for daytime and nighttime. The Egyptian god Horus represented the day. From the name Horus we get the English words ‘horizon’ which is to say, ‘Horus has risen’ and ‘hour’. The Egyptian god Seth [Set] represented the night skies. From Seth we get the English term ‘sunset’ which is to say, ‘sun-seth’. The ancient Egyptians also had an allegory concerning the two Egyptian gods. It was said, every morning Horus would crush the wicked Seth in battle while at evening, Seth would win the battle over Horus and send him to the underworld. ”
- — Michael Cage (2015), Illuminati Bible: Hidden Wisdom of Alpha and Omega (pg. #) 
- Hour – EtymOnline.com.
- Horae – Wikipedia.
- ὤρα – Wiktionary.
- Barry, Kieren. (1999). The Greek Qabalah: Alphabetic Mysticism and Numerology in the Ancient World (pdf) (#901, pg. 253). Weiser.
- Morning sun – Hmolpedia 2020.
- Macrobius. (432AD). Saturnalia (§1, §§21, sentence 13) (txt). Publisher.
- Author. (1862). “Review of Powell’s Humane History” (pg. 112), The Philobiblion, 1:111-14.
- Wilcken, Ulrich. (1967). Alexander the Great (pg. 114). Publisher.
- Shelley, William. (1998). The Origin of the Europeans: Classical Observations in Culture and Personality (pg. 185). International.
- Murdock, Dorothy. (2008). Christ in Egypt: the Horus-Jesus Connection (pg. 224). Publisher.
- Cage, Michael. (2015). Illuminati Bible: Hidden Wisdom of Alpha and Omega (pg. #). LuLu.
- Poole, Reginald. (1851). Horae Aegyptiacae: the Chronology of Ancient Egypt Discovered from Astronomical and Hieroglyphic Records Upon its Monuments (§4: The Phoenix Cycle, pgs. 39-). Publisher.
- Hour – Hmolpedia 2020.