Each day of the week is ruled by one of the seven visible planets of Vedic astrology: Sunday by the Sun, Monday by the Moon, Tuesday by Mars, Wednesday by Mercury, Thursday by Jupiter, Friday by Venus, and Saturday by Saturn. The weekday is called the vara, and it is the second limb of the panchang, the five-limbed Vedic almanac. The day takes on the temperament of its ruling planet, so a Jupiter Thursday favours study and counsel while a Saturn Saturday suits slow, serious labour. The assignment is ancient, fixed, and visible in the day names themselves: Ravivara is the Sun's day, Somavara the Moon's, Shanivara Saturn's.
This page covers the vara alone: the seven lords, the planetary-hour arithmetic that set the week's order, and the daily windows that hang off the weekday. For the other four limbs, start at the panchang.
The seven varas and their lords
The table below is the canonical assignment. The Sanskrit names attach vara, day, to the planet's name, and each day inherits its lord's character, which the nine planets guide covers planet by planet.
| Day | Sanskrit name | Ruling planet | Temperament of the day | Traditionally favoured for |
|---|---|---|---|---|
| Sunday | Ravivara | Sun | Bright, authoritative | Matters of authority, health, government |
| Monday | Somavara | Moon | Gentle, nourishing | Beginnings, family matters, travel |
| Tuesday | Mangalavara | Mars | Sharp, energetic | Courage, competition, physical effort |
| Wednesday | Budhavara | Mercury | Quick, clever | Trade, writing, learning, communication |
| Thursday | Guruvara | Jupiter | Wise, expansive | Study, teaching, ceremonies, counsel |
| Friday | Shukravara | Venus | Warm, pleasing | Marriage, art, comforts, partnerships |
| Saturday | Shanivara | Saturn | Slow, disciplined | Patient labour, service, long-term work |
Where the order of the week comes from
The week's order is not a convention someone chose; it falls out of the planetary hours. Arrange the seven visible planets from slowest-moving to fastest: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon. The hours of each day are ruled by the planets in that rotation, beginning at sunrise with the day's own lord.
Run the count and the week assembles itself. Sunday's first hour belongs to the Sun; 24 hours later, the 25th hour, the first of the next day, lands three places along the rotation, on the Moon. Monday's 25th hour lands on Mars, and so on around the loop. Every day's lord is three steps past the last, and seven days later the cycle closes back at the Sun. The same arithmetic explains why the planetary day order differs from the slowest-to-fastest order: the week is the speed sequence sampled every 25th hour.
The seven lords survive in day names far outside Sanskrit, because the same planetary week spread across the ancient world. English keeps Sunday, Monday, and Saturday for the Sun, Moon, and Saturn directly. The Romance languages keep the middle of the week: in French, mardi is Mars's day, mercredi Mercury's, jeudi Jupiter's, and vendredi Venus's. Ravivara and Sunday, Shanivara and Saturday, name the same lords on opposite sides of the world.
The day runs sunrise to sunrise
The Vedic day, and its vara, begins at local sunrise and ends at the next sunrise. Midnight has no special status. The hours before dawn belong to the previous day's lord, so a birth at 2 a.m. on a civil Tuesday falls in Monday's vara, the Moon's day.
This matters for every use of the weekday: the panchang's columns, the planetary hours, and the placement of the day's windows are all anchored to sunrise at a specific place. It is one of the reasons today's panchang is always computed for a location rather than printed once for the whole world, and one of the first habits to build when reading any almanac: check the sunrise line before trusting the clock times.
The hours within the day
The same seven-planet rotation that orders the week runs inside every day as the horas, the planetary hours. The first hour after sunrise belongs to the day's lord, the next to the following planet in the slowest-to-fastest rotation, and so on through all 24.
The hora adds a finer brush to day-picking. On any day, a Jupiter hour borrows a little of Jupiter's grace, a Mercury hour suits correspondence and trade. The classical day-quality reading starts with the vara and refines by hora, then weighs both against the other limbs of the almanac, which is the method the muhurta guide walks through.
Spelled out for one day: Sunday opens at sunrise with a Sun hora, then Venus, Mercury, Moon, Saturn, Jupiter, Mars, and back to the Sun for the eighth hour, the loop running all the way to the next sunrise. Read down any day's column this way and the lords of all 24 hours follow from nothing but the day's name.
Rahu Kalam: the window each day sets aside
Every day carries one window, an eighth of the daylight span, that tradition assigns to Rahu, the shadow planet, and keeps free of new beginnings: no launches, no signings, no first steps. Routine work continues as normal. The window is about 90 minutes and passes on its own, so the practice costs nothing beyond a glance at the clock.
| Day | Rahu Kalam (with 6:00 sunrise, 18:00 sunset) | Eighth of the day |
|---|---|---|
| Sunday | 16:30 to 18:00 | 8th |
| Monday | 7:30 to 9:00 | 2nd |
| Tuesday | 15:00 to 16:30 | 7th |
| Wednesday | 12:00 to 13:30 | 5th |
| Thursday | 13:30 to 15:00 | 6th |
| Friday | 10:30 to 12:00 | 4th |
| Saturday | 9:00 to 10:30 | 3rd |
The clock times above assume an idealised 12-hour day. Real sunrises move, so the true window at your location stretches or shifts with the season; today's panchang computes it exactly. Two sibling windows, Yamaganda and Gulika Kalam, are marked by the same eighth-of-the-day logic and treated the same way.
Matching the day to the deed
The working use of the vara is fit. Thursday, the teacher's day, has long been the traditional choice for a child's first lesson; Friday, the day of Venus, for engagements and matters of partnership; Wednesday, Mercury's day, for accounts, contracts, and trade.
The sharper days have their own work rather than a warning label. Tuesday's Mars energy is exactly right for surgery, sport, and tasks that need nerve; Saturday's Saturn suits foundations, land, and labour that rewards patience; Sunday's Sun fits petitions to authority and matters of position. The craft is to give each day the deeds that match its lord, and to let the other four limbs of the panchang confirm the choice.
The vara of your birth
The weekday of your birth adds one more thread to a chart reading. The classical natal tradition reads the panchanga of the birth moment, the vara included, as a tone over the chart: the birth day's lord is taken as a planet whose themes run close to the person.
It is a light-touch factor, never a verdict, and it is read together with the birth tithi, nakshatra, yoga, and karana rather than alone, the way the panchang describes the five limbs working in concert. A free birth chart lists the full panchanga of your birth moment, vara and all, alongside the chart itself.