--- title: "Hora Timing in Astrology: The Hour That Named the Week" slug: "hora-timing-in-astrology" canonical_url: "https://mahadasha.com/hora-timing-in-astrology" description: "Hora timing in astrology divides the day into 24 planetary hours. Why day and night horas differ in length, and how they generated the weekday order." published_date: "2026-08-05 09:00:00" modified_date: "2026-08-05 09:00:00" author: "Pawan Acharya" keywords: "hora timing in astrology, planetary hours, hora calculator, shubh hora, hora chart, chaldean order, hora today" locale: "en" --- # Hora Timing in Astrology: The Hour That Named the Week > Twenty-four planetary hours, running slowest planet first from sunrise. Count them and the order of the seven weekdays falls out of the arithmetic. # Hora Timing in Astrology: The Hour That Named the Week Hora timing in astrology divides a day into 24 planetary hours, each ruled by one of the seven grahas. The first hora of any day belongs to that day's own lord, and the rest follow in a fixed sequence. Choose an hour ruled by the planet that governs what you are doing, and the tradition holds you have picked a favourable moment. Before that, one disambiguation. Hora also names the D2 divisional chart, which splits each sign in half and is read for wealth. Same word, entirely different thing, and searching for "hora" will return both. If you came for the chart, that is [the Hora chart (D2)](https://mahadasha.com/hora-chart-d2) . This post is about the hour. ## A hora is not sixty minutes The day is divided into twelve horas and the night into twelve more, measured from sunrise and sunset respectively. Since daylight and darkness are almost never equal, the two kinds of hora are almost never the same length. At Delhi on the June solstice the daylight runs about 836 minutes, giving day horas of 69.7 minutes, while the night gives horas of 50.4 minutes. On the December solstice it reverses: 51.4 minutes by day and 68.6 by night. A 38 per cent difference between the longest and shortest hora on the same date. Only at the equinoxes does a hora equal a clock hour. The rest of the year the word is a translation of convenience, and any table that lists horas at fixed clock times is describing the equinox and nothing else. ## The order they run in Horas cycle through the seven grahas in a specific sequence: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon, and back to Saturn. That is not a ranking or a preference. It is the seven arranged by apparent speed against the background stars, slowest first. Saturn takes about 29 years to circle the zodiac, Jupiter about 12, Mars about two, the Sun and Venus and Mercury about a year each as seen from Earth, and the Moon about 27 days. Sort by that and you get exactly the sequence above. It is usually called the Chaldean order, and it is the oldest ordering of the planets that survives. ## How hora timing in astrology named the week Here is the part worth the price of admission. The first hora of a day belongs to the day's lord. Sunday's first hora is the Sun's. Count forward through the Chaldean sequence: hora 2 is Venus, hora 3 Mercury, hora 4 the Moon, hora 5 Saturn, hora 6 Jupiter, hora 7 Mars, and hora 8 returns to the Sun. Now count all the way to hora 25, which is the first hora of the following day. Since 24 divided by 7 leaves a remainder of 3, hora 25 lands three places further along the cycle than hora 1 did. Three places on from the Sun, in the sequence Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon, is the Moon. So the day after the Sun's day is the Moon's day. Repeat from the Moon and you land on Mars. From Mars, Mercury. Then Jupiter, Venus, Saturn, and back to the Sun. Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday. The order of our week is a by-product of running seven planetary lords through 24 hours. The loop closes after exactly seven steps because 3 and 7 share no common factor, so stepping by three visits all seven before repeating. This is why the weekday order looks scrambled against the Chaldean sequence. It is not scrambled. It is the Chaldean sequence sampled every third position, and the sampling interval is the remainder of 24 divided by 7. Change the day to 20 hours or 28 and the week changes with it. ## An uneven share Twenty-four hours split among seven lords does not divide evenly, and the remainder has a consequence. Since 24 is three times seven plus three, three planets get four horas each day and the other four get three. Which three depends on the weekday. On a Sunday, the day's first three lords in the cycle each get a fourth turn: the Sun, Venus and Mercury take four horas apiece while Saturn, Jupiter, Mars and the Moon take three. Every weekday, the extra horas go to its own lord and the two that follow it in the Chaldean sequence. So a day is not neutral between the seven. It is weighted toward its own lord and the two behind it, which is a second and quieter reason why the weekday matters, on top of the associations covered in [vara in panchang](https://mahadasha.com/vara-in-panchang) . ## Using a hora in practice The traditional assignments follow the planets directly, so there is nothing extra to learn: - Sun hora for authority, government, applications to those in power. - Moon hora for anything domestic, and for approaching people rather than institutions. - Mars hora for surgery, dispute, sport, anything requiring force. - Mercury hora for study, writing, negotiation, accounts, messages. - Jupiter hora for teaching, ceremony, advice, investment. - Venus hora for marriage, art, purchases meant to please. - Saturn hora for labour, iron, property, work meant to last. Jupiter, Venus and Mercury horas are the general-purpose favourable ones, and Jupiter's is usually treated as the best of the set for anything important. The catch is precision. A hora is a little over an hour and shifts with sunrise, so a hora chosen from a printed table for the wrong city or the wrong month is simply the wrong window. The [hora calculator](https://mahadasha.com/hora-calculator) computes them from your own sunrise, which is the only way the method is worth anything. ## Working one out Take 5 August 2026 at Delhi. Sunrise 05:45:50, sunset 19:08:12, so the daylight is 802.4 minutes and a day hora runs 66.9 minutes. It was a Wednesday, so hora 1 belongs to Mercury and runs 05:46 to 06:53. From there the Chaldean sequence continues: hora 2 is the Moon, 06:53 to 08:00. Hora 3 is Saturn, 08:00 to 09:06. Hora 4 Jupiter, 09:06 to 10:13. Hora 5 Mars, 10:13 to 11:20. Hora 6 the Sun, 11:20 to 12:27. Hora 7 Venus, 12:27 to 13:34. Then Mercury again at 13:34, and the cycle repeats. Suppose you wanted a Jupiter hora that Wednesday morning. It is 09:06 to 10:13, and a quick cross-check is worth doing: Yamaganda that day ran 07:26 to 09:06, so the Jupiter hora begins the moment Yamaganda ends. Gulika does not start until 10:46. That window is clean. Notice the sunset boundary. Hora 12 ends at 19:08 with sunset, and hora 13 starts the night sequence at a completely different length, 50 minutes or so rather than 67. The two never run continuously, which is the practical reason clock-based hora tables fail after dark. ## Where horas sit among the other tools Hora is the finest-grained of the daily timing systems and also the least weighty. A muhurat selection would not be built on horas alone. In descending order of authority a practitioner would take the tithi and the star-and-weekday combination first, then [Choghadiya muhurat](https://mahadasha.com/choghadiya-muhurat) , then check the eighth-part windows, and use the hora last, as a tiebreaker between two otherwise equal moments. Where it earns its keep is in ordinary decisions too small to justify the rest. Sending a difficult email in a Mercury hora costs nothing and is a defensible use of the system. ## Frequently asked questions ### What is hora timing in astrology? The division of the day into 24 planetary hours, twelve between sunrise and sunset and twelve between sunset and sunrise, each ruled by one of the seven grahas in the Chaldean order. ### Is a hora exactly one hour? Only at the equinoxes. Day horas are a twelfth of the daylight and night horas a twelfth of the night, so at Delhi in June a day hora runs about 70 minutes and a night hora about 50. ### Is this the same as the Hora chart? No. The D2 or Hora chart divides each sign into two halves and is read for wealth in a birth chart. The planetary hour is a division of time. They share only the name. ### Which hora is best? Jupiter's for anything important, with Venus and Mercury also generally favourable. But match the planet to the task: Mercury for negotiation, Venus for a purchase, Saturn for work meant to endure. The [hora calculator](https://mahadasha.com/hora-calculator) gives all 24 for your date and city. For the limb that fixes which lord starts the sequence, see [vara in panchang](https://mahadasha.com/vara-in-panchang) .